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		<title>기현이♡경민이♡예진이의 해피하우스♥</title>
		<link>http://misojium.com/</link>
		<description>예진이와 고고씽!!</description>
		<language>ko</language>
		<pubDate>Mon, 12 Mar 2012 14:44:19 +0900</pubDate>
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		<managingEditor>괴스트</managingEditor>
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		<title>기현이♡경민이♡예진이의 해피하우스♥</title>
		<url><![CDATA[http://cfile29.uf.tistory.com/image/1551760B4BFF505D498042]]></url>
		<link>http://misojium.com/</link>
		<description>예진이와 고고씽!!</description>
		</image>
		<item>
			<title>네이버의 경향,한겨례 뉴스차단 과연 그들이 맞는가?</title>
			<link>http://misojium.com/473</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
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조선일보의 90일간 malware 결과&amp;nbsp;&lt;br /&gt;
&lt;p style=&quot;margin:0&quot;&gt;&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile29.uf.tistory.com/original/154A18404F5D887B373E7C&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile29.uf.tistory.com/image/154A18404F5D887B373E7C&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;chosun-malware.png&quot; height=&quot;242&quot; width=&quot;530&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;/p&gt;
http://www.google.com/safebrowsing/diagnostic?site=chosun.com&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;YTN의 90일간 malware 결과&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;br /&gt;
&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile22.uf.tistory.com/original/205F40424F5D8CFC231580&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile22.uf.tistory.com/image/205F40424F5D8CFC231580&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;ytn-malware.png&quot; height=&quot;237&quot; width=&quot;530&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;br /&gt;
http://www.google.com/safebrowsing/diagnostic?site=ytn.co.kr&lt;br /&gt;
&lt;br /&gt;&lt;br /&gt;
동아일보의 90일간 malware 결과&amp;nbsp;&lt;br /&gt;
&lt;p style=&quot;margin:0&quot;&gt;&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile2.uf.tistory.com/original/174EED454F5D8D2D1E9C71&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile2.uf.tistory.com/image/174EED454F5D8D2D1E9C71&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;donga-malware.png&quot; height=&quot;249&quot; width=&quot;530&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;/p&gt;
&lt;br /&gt;http://www.google.com/safebrowsing/diagnostic?site=donga.com&lt;br /&gt;
&lt;br /&gt;&lt;br /&gt;
&lt;br /&gt;
한겨례신문의 90일간 malware 결과&amp;nbsp;&amp;nbsp;&lt;br /&gt;
&lt;p style=&quot;margin:0&quot;&gt;&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile25.uf.tistory.com/original/164A18404F5D887B3826EC&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile25.uf.tistory.com/image/164A18404F5D887B3826EC&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;hani-malware.png&quot; height=&quot;245&quot; width=&quot;530&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;/p&gt;
http://www.google.com/safebrowsing/diagnostic?site=hani.co.kr&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
경향신문의 90일간 malware 결과&amp;nbsp;&amp;nbsp;&lt;br /&gt;
&lt;br /&gt;
&lt;p style=&quot;margin:0&quot;&gt;&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile22.uf.tistory.com/original/184A18404F5D887C399304&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile22.uf.tistory.com/image/184A18404F5D887C399304&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;khan-malware.png&quot; height=&quot;252&quot; width=&quot;530&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;/p&gt;
&lt;br /&gt;
http://www.google.com/safebrowsing/diagnostic?site=khan.co.kr&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
기사를 보다가 문득 생각나서 구글의 malware(악성코드) 검색을 이용해서 malware빈도를 비교 해보게 됐다.&amp;nbsp;&lt;br /&gt;
&lt;br /&gt;
어떤사이트에 malware 많은것일까? &lt;br /&gt;
네이버가 내부에서 파악하고 있는 통계는 어떤기준인지 먼저 밝여야 하지 않을까??&lt;br /&gt;
&lt;br /&gt;
정치적이 아니라는 근거를 언넝 밝혀라~~~~~~&lt;br /&gt;
&lt;br /&gt;
자꾸 의심하게되네 씨바!~~~&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
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&lt;div class=&quot;tt-plugin tt-share-entry-with-sns tt-sns-icon-alignment-left tt-sns-icon-size-big&quot;&gt;
	&lt;div class=&quot;tt-sns-wrap&quot;&gt;
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			&lt;li class=&quot;tt-sns-service-mypeople&quot;&gt;&lt;a href=&quot;javascript:;&quot; onclick=&quot;ShareEntryWithSNS.share(&#039;mypeople&#039;, &#039;&#039;, &#039;&#039;);&quot;&gt;마이피플&lt;/a&gt;&lt;/li&gt;
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			&lt;li class=&quot;tt-sns-service-me2day&quot;&gt;&lt;a href=&quot;javascript:;&quot; onclick=&quot;ShareEntryWithSNS.share(&#039;me2day&#039;, &#039;&#039;, &#039;&#039;);&quot;&gt;미투데이&lt;/a&gt;&lt;/li&gt;
			&lt;li class=&quot;tt-sns-service-other&quot;&gt;&lt;a href=&quot;javascript:;&quot; onmouseover=&quot;ShareEntryWithSNS.showLayer(event, &#039;ttSnsServiceMore-&#039;);&quot; onmouseout=&quot;ShareEntryWithSNS.hideLayer(event, &#039;ttSnsServiceMore-&#039;);&quot;&gt;더보기&lt;/a&gt;&lt;/li&gt;
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</description>
			<category>googling</category>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/473</guid>
			<comments>http://misojium.com/473#entry473comment</comments>
			<pubDate>Mon, 12 Mar 2012 14:30:09 +0900</pubDate>
		</item>
		<item>
			<title>요즘 심취한 coldplay 의 fix you 가사 및 유튜브</title>
			<link>http://misojium.com/472</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
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&lt;div style=&quot;text-align: left;&quot;&gt;
&lt;br /&gt;
&lt;object style=&quot;height: 390px; width: 640px&quot;&gt;&lt;param name=&quot;movie&quot; value=&quot;http://www.youtube.com/v/hbJuEFs7-kU?version=3&amp;amp;feature=player_detailpage&quot;&gt;&lt;param name=&quot;allowFullScreen&quot; value=&quot;true&quot;&gt;&lt;param name=&quot;allowScriptAccess&quot; value=&quot;always&quot;&gt;&lt;embed src=&quot;http://www.youtube.com/v/hbJuEFs7-kU?version=3&amp;amp;feature=player_detailpage&quot; type=&quot;application/x-shockwave-flash&quot; allowfullscreen=&quot;true&quot; allowScriptAccess=&quot;always&quot; width=&quot;640&quot; height=&quot;360&quot;&gt;&lt;/object&gt;

&lt;br /&gt;
When you try your best but you don&#039;t succeed,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
최선을 다했으나 성공하지 못했을 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
When you get what you want, but not what you need,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
원하는 것을 얻었으나 필요한 것은 아닐 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
When you feel so tired, but you can&#039;t sleep,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
너무 피곤하나 잠들지 못할 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Stuck in reverse,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
모든 것이 엉켜버린 기분일 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
and the tears come streaming down your face,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
눈물이 흘러 얼굴로 떨어질 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
When you lose something you can&#039;t replace,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
대체할 수 없는 소중한 것을 잃어버렸을 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
When you love someone but it goes to waste,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
너무나 사랑했으나 수포로 돌아갔을 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Could it be worse?&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
더 이상 나쁠 수 있을까요?&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Lights will guide you home,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
불빛이 당신을 집으로 인도하고&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
and ignite your bones,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
마음 속 깊이 불을 밝혀 줄 거에요.&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
and I will try to fix you&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
그리고 나는 당신을 어루만져 줄게요.&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
High up above or down below,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
더 높은 곳으로 오르거나 더 낮은 곳으로 떨어질 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
When you&#039;re too in love to let it go,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
떠나 보내기엔 너무나 사랑할 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
If you&#039;ll never try, you&#039;ll never know,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
노력하지 않으면 절대 알 수 없겠죠&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Just what you are worth&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
당신이 얼마나 소중한 존재인지&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Lights will guide you home,&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
불빛이 당신을 집으로 인도하고&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
and ignite your bones&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
마음 속 깊이 불을 밝혀 줄 거에요.&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
and I will try to fix you&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
그리고 나는 당신을 어루만져 줄게요.&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Tears stream down your face&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
눈물이 흘러 얼굴로 떨어질 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
When you lose something you cannot replace&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
대체할 수 없는 소중한 것을 잃어버렸을 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Tears stream down your face&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
눈물이 흘러 얼굴로 떨어질 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
And I&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
그리고 난&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Tears stream down your face&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
눈물이 흘러 얼굴로 떨어질 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
I promise you I will learn from all of my mistakes&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
내 실수들로부터 배울 거라고 약속할게요.&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
Tears stream down your face&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
눈물이 흘러 얼굴로 떨어질 때&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;/p&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
And I&amp;nbsp;&lt;/div&gt;
&lt;div style=&quot;text-align: left;&quot;&gt;
그리고 난&lt;/div&gt;
&lt;p&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;text-align: left;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;Lights will guide you home&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;text-align: left;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;And ignite your bones&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;text-align: left;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;And I will try to fix you.&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;text-align: left;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;출처:&amp;nbsp;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;새로운 출발선에 서서 by 삼돌 누나&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;======&lt;/a&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;&amp;nbsp;&lt;/a&gt;&lt;/p&gt;
&lt;p align=&quot;center&quot; style=&quot;text-align: left;color: rgb(102, 102, 102); font-family: dotum; background-color: rgb(255, 255, 255); &quot;&gt;&lt;a href=&quot;http://blog.naver.com/heawonkim?Redirect=Log&amp;amp;logNo=90033314823&quot; target=&quot;_blank&quot; style=&quot;color: rgb(102, 102, 102); text-decoration: none; &quot;&gt;요즘 이런류의 서정적인 노래가 끌린다.&amp;nbsp;&lt;br /&gt;
가사도 아름답고 맘에도 와 닫는다.&amp;nbsp;&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
&amp;nbsp;&lt;/a&gt;&lt;/p&gt;
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			<category>이것저것</category>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/472</guid>
			<comments>http://misojium.com/472#entry472comment</comments>
			<pubDate>Thu, 01 Dec 2011 14:50:33 +0900</pubDate>
		</item>
		<item>
			<title>프로그래머의 아내가 알아야 할 97가지</title>
			<link>http://misojium.com/471</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
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&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;딱 떨어지는 숫자는 2진수입니다.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;한 손으로 31까지 셀 수 있음&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;만능이 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;&quot;컴퓨터&quot;를 잘 하는게 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;프로그래머라고 Office 시리즈에 정통한 것이&amp;nbsp;아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;아, 그 작업은 사무쪽 누님이 잘하실 겁니다.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;가나 입력으로 변환한 다음에는 반드시 로마자 입력으로 돌려놓을 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;프로그램의 쓰레기 수집은 잘 하지만 자기 방의 쓰레기 수집은 잘 못함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(0, 0, 0); &quot;&gt;멀티스레드 처리 작성은 할 수 있지만 멀티스레드 처리는 못함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;Amazon 에서 사는 건 기술서이므로, 딱히 포장물 내용을 확인할 필요는 없음&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;쌓아놓은 책은 스택이므로 순번을 바꾸지 말것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;오라일리 책은 「같은 책」이 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;표지에 동물만 그려져 있는 책만 꽂혀있어도 그건 동물도감이 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;프로그래밍을 안하는 날도 있음&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;프로그래밍 언어나 에디터에 대한 집착이 사라진다면 깨달음을 얻었거나 완전연소했거나 둘 중 하나&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;언어로 바람피우는 것과 인생의 바람피우기는 다른 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;「자식을 죽인다」는 말에 놀라지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;일 관계로 전화를 할 때, 자식이 죽지 않으면 부모를 죽여버리라는 대화를 들어도 놀라지 말것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;라이브러리라는 것은 도서관을 말하는 게 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;「사이드 이펙트(부작용)」는 부정적인 의미로 사용하는 것이 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;특히 「다이아몬드 상속」은 유산상속같은 이야기를 하는 것이 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;괜히 보석 이름 같은 것을 중얼거려도 보석에 대해 잘 아는 것이 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(32, 64, 48); &quot;&gt;루비와 펄 중에 뭐가 좋아? 라고 물어보면, 싱긋 웃으면서 펄이라고&amp;nbsp;대답할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;「조금만 더하면」「거의 끝났어」라는 말이 나오기 시작하면 당분간 끝나지 않을 것이라고 생각할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;갑자기 혼잣말을 하기 시작해도 정신이 이상해진 것이 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;PC 를 보고 있는 남편에게 말을 걸어도 되는 타이밍인지 아닌지 외견으로 판단하는 것은 포기하는 것이 좋음&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;23-24시 정도가 가장 활발함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;HP 는 항상 0에 수렴함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;회사와 집의 구별이 그다지 없고, PC 앞에 있는가 없는가의 구별 밖에 없음&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;스스로가 정보수집과 오락의 경계선을 이해하지 못함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;몬스터헌터는 업무&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;애니메이션 보는 것은 업무&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;일을 하는 것처럼 보이지만 실은 인터넷을 하는 것 뿐임&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(64, 64, 128); &quot;&gt;주말에도 스터디에 간다고 하는 것은 공부를 열심히 한다는 증거, 가사가 싫어서 그러는 게 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;한밤에 긴급전화가 왔다면, 다음날부터의 예정은 캔슬이라고 생각합시다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;밤중에 갑자기 사라져도 그냥 장애 대응하러 간 것임&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;오전중에 돌아오는 일이 많아져도 바람피우는 것이 아닌지 의심하지 말것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;주말에만 사복으로 「출근」했다고 바람피우는 것이라고 의심하지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;결혼식장에서 신랑이 사라져도 당황하지 말것. 고객이 호출한 것 뿐임&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;정시퇴근은 도시전설&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;「귀가한다」「귀가할 수 있다」라는 말은 별 도움이 안됨&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;10일 정도 돌아오지 않아도 당황하지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;감금같은 걸 당해도 빚이 있어서 그러거나 한 게 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;가끔씩 일찍 돌아와도 잘렸을 걱정은 하지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;여름 휴가 언제야? 라고 묻지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;Twitter 의 post 빈도 감소나 내용에서 상대가 얼마나 바쁜지 추측해서 위로할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;화재나 행진같은 것에 트라우마를 갖고 있을 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;남편 급여의 직능급과 기본급과 잔업수당의 비율&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(96, 32, 128); &quot;&gt;노동기준법&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;OA 기기라고 적힌 우편물은 절대로 OA 기기가 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;PC 나 휴대폰, iphone 에 패스워드 락이 걸려있는 것은 보안대책을 위해서. 바람을 핀다거나 야한 것을 숨기고 있는게 아니랍니다（　＾ω＾）&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;컴퓨터는 이미 집에 있잖아, 라고 하지 마시길. 당신이 갖고 있는 구두나 가방과 같은 것입니다.&lt;br /&gt;
&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;한밤중에 컴퓨터로 동영상을 보면서 싱글거리고 있다면, 그것은 분명&amp;nbsp;Apple 의 신제품 발표이므로 신용카드를 몰수하는 것이 좋음&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;스티브 잡스의 프리젠테이션이 있는 다음날 아침에 갑자기 개최되는 가족회의에서 제출하는 안건에 대하여&amp;nbsp;「다른 집은 다른 집이고 우리 집은 우리 집이야!」라고 기각할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;뭐가 뭔지 알수 없는 T 셔츠를 남편이 계속 가져와도 적당히 버리거나 하지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;컴퓨터 책상에 놓여있는 피겨나 프라모델은 버리지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;그것은 잡동사니도 부서진 물건도 아님&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;키넥트를 사려고 하는 것은 유저 인터페이스 연구 때문에&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;러브 플러스를 하는 것은 유저 인터페이스 연구 때문에&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;사용자 경험(UX)인지 뭔지 하는 주제에 CUI 를 좋아함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;LCD 가 달려있는 작고 비슷하게 생긴 기계를 잔뜩 갖고 있어도 전부 다른 물건이며 각자 의미가 있습니다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;동작검증을 하기 위해서는 신제품이 필요하며, 그것은 Amazon 에서 배달됨&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;옥션 사용방법을 숙지하고, 남편이 사온 장난감을 팔아치워 용돈으로 씁시다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;생일 선물은 원하는 물건을 미리 말해두지 않으면 신제품 디지털 가전(Gadjet)을 받게 됨&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 208); &quot;&gt;깜짝 선물을 준비하고 싶다면 남편의 Amazon 위시 리스트를 조사함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 112); &quot;&gt;iPhone 앱, Android 앱, Web 사이트를 만들었다는 이야기를 들으면 뭐가 뭔지 몰라도 상냥하게 대답해줄 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 112); &quot;&gt;쓸데없이 하이텐션으로 의미를 알 수 없는 소리를 지껄일 때에는 단순히 흥미 깊은 기술이 나와서 텐션이 높아진 것 뿐이므로, &quot;잘 모르겠지만, 대단하다는 건 알겠다&quot;라고 대답해주세요&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 112); &quot;&gt;갑자기 이상한 어휘가 늘었다면 니코니코 동화같은 데애서 유행하고 있는 것이라고 추측하시길&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 112); &quot;&gt;남편의 HN 과 본명을 이어보려고 해서는 안됨&lt;br /&gt;
남편의 블로그의 과거로그를 음독해서는 안됨&lt;br /&gt;
남편의 HN 으로 검색해서 흑역사를 알아서는 안됨&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 112); &quot;&gt;「우리 마누라가…」라고 했을 때, 그것은 프로그래머 사이에서 통용되는 전문용어입니다. 당신을 말하는 것이 아닙니다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 112); &quot;&gt;오타쿠라고 하면 필요 이상으로 싫어하지만, 긱(Geek)이라고 말하면 기뻐합니다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 0); &quot;&gt;침울해하고 있을 때는 「컴퓨터를 조작해서 ○○할 때 마우스를 쓰지 않고 키보드만으로 하려면 어떻게 해야해?」라고 물으면 기뻐하면서 가르쳐 줄 것입니다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 0); &quot;&gt;「시뮬레이션」이라고 말하면 혼나므로 주의할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 0); &quot;&gt;이상, 이하, 미만, 보다 위, 보다 아래를 대충 섞어쓰면 기분이 나빠짐&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 0); &quot;&gt;프로그래머는 「절대로」「뭔가 이상해졌어」「아무것도 안했어」같은 말에 과잉으로 반응합니다. 홧병, 쇼크사, 자살의 위험성이 있으므로 이런 말을 사용할 때에는 세심한 주의가 필요합니다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 0); &quot;&gt;부부싸움할 때 최대의 무기는 화이트 보드&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 0); &quot;&gt;어쩌다 아내의 방식에 불만을 표시하면 「그건 사양(仕様)이예요」라고 대답함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 0); &quot;&gt;남편이 이건 사양이라고 말하면 그 사양은 변경되었습니다 라고 대답할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 0, 0); &quot;&gt;싸워서 꼭지가 돌아버렸을 때에는, 네트워크 회선을 끊어버리는 것이 가장 손쉽고 효과적으로 분노를 표현하는 방법입니다.&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;가능하면 아내와의 대화를 자동화시키고 싶어 함&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;아내에게는 사양 변경이 붙는 법&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;홈 서버를 가리키면서 쓰지도 않는데 왜 항상 전원이 켜져 있는 거야 라고 묻지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;연락수단은 전화&amp;lt;&amp;lt;&amp;lt;&amp;lt;&amp;lt;(넘을 수 없는 벽)&amp;lt;&amp;lt;&amp;lt;&amp;lt;메일&amp;lt;&amp;lt;&amp;lt;&amp;lt;&amp;lt;&amp;lt;&amp;lt;IRC, Skype, etc&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;Google Calender 에서 상대의 스터디 스케쥴을 파악할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;집안 예정은 남편이 지정한 그룹웨어로 공유할 것. 구두(口頭)로의 통지만으로는 위험&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;남편이 해야할 것은 데스마치(죽음의 행진)이 아닌 여유가 있을 때 기억시켜두지 않으면 답이 없음&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;가정 내의 중요한 스케쥴을 끼워넣고 싶을 때에는 마감 근처의 주말은 피합시다. 어차피 집에 못 돌아옵니다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;남편이 전문분야인 화제에는 신중하게 접근할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;친구 관계의 잡담을 할 때에는 상관관계도를 그려주면 이해가 빨라집니다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;단순히 이야기를 들어주기 바랄 때에서는 그렇게 명시할 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;동의해주기 바랄 때에 분석되어 정론을 들어도 화내지 마시기 바랍니다&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;요건은 항목별로 적어서 전하지 않으면 프로그래머 스스로가 버그를 냄&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;밤생활이 불만이면 Redbull 을 내밀어봄&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;정기적으로 자식들에게 이게 아빠야 하면서 사진을 보여주세요&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;남편이 「프로그래머의 아내가 알아야 할 97가지」같은 걸 트윗해도 신경쓰지 말 것&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;읽어보라고 한 97가지의 절반 이상이 뭔 소리인지 몰라도 어쩔 수 없음&lt;/span&gt;&lt;/li&gt;
&lt;li&gt;&lt;span style=&quot;color: rgb(208, 80, 16); &quot;&gt;이러니저러니 해도 아내를 사랑함. 하지만「쪽팔려서 말 못해」라고 생각해서 말로 표현하지 않을뿐.&lt;br /&gt;
&lt;br /&gt;&lt;br /&gt;
&lt;br /&gt;경민아 잘 읽어보고 모르면 물어봐줘.. ㅎㅎㅎㅎ&amp;nbsp;&lt;br /&gt;
&lt;br /&gt;&lt;br /&gt;
원본인 일본사이트 원본 :&amp;nbsp;&lt;a href=&quot;http://d.hatena.ne.jp/tt_clown/20101218/1292609206&quot;&gt;http://d.hatena.ne.jp/tt_clown/20101218/1292609206&lt;br /&gt;
&lt;br /&gt;&amp;nbsp;&lt;/a&gt;&lt;br /&gt;
&lt;br /&gt;&lt;br /&gt;
&amp;nbsp;&lt;/span&gt;&lt;/li&gt;
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			<category>유머</category>
			<author>예진이네집 괴스트</author>
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			<comments>http://misojium.com/471#entry471comment</comments>
			<pubDate>Fri, 15 Jul 2011 11:27:39 +0900</pubDate>
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			<title>도치맘에서 이벤트 하네요..꼭 됐으면 좋겠네요 애기가 요즘 동화를 좋아해서..^&amp;^</title>
			<link>http://misojium.com/453</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
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&lt;DIV style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;
&lt;DIV class=NHN_Writeform_Main&gt;
&lt;P align=center&gt;&lt;FONT color=#ff0000&gt;&lt;STRONG&gt;[이벤트] 은평문화예술회관에서 진행되는 가족 뮤지컬 &quot;피터팬&quot;에 도치맘 회원 5쌍 초대합니다.(~11월29일)&lt;/STRONG&gt;&lt;/FONT&gt;&lt;/P&gt;
&lt;P align=center&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=center&gt;&lt;FONT color=#000000&gt;서울 은평문화예술회관에서 진행되는 피터팬에 도치맘회원 5쌍 (1인당 2매)초대합니다. ^^ &lt;/FONT&gt;&lt;/P&gt;
&lt;P align=center&gt;&lt;FONT color=#000000&gt;피터팬의 모험...아이들이 참 좋아하는 내용이죠? ^^ &lt;/FONT&gt;&lt;/P&gt;
&lt;P align=center&gt;&lt;FONT color=#000000&gt;가까우신 분들은 이벤트 참여하셔서 아이들과 즐거운 시간 되시길 바랍니다. ^^ &lt;/FONT&gt;&lt;/P&gt;
&lt;P align=center&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=center&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=center&gt;&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile22.uf.tistory.com/original/146568164CEDA54E2D6173&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile22.uf.tistory.com/image/146568164CEDA54E2D6173&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;ÇÇÅÍÆÒ1_gossi777.jpg&quot; height=&quot;533&quot; width=&quot;650&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;/P&gt;
&lt;P&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; COLOR: #555555&quot;&gt;&lt;/SPAN&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; COLOR: #555555&quot;&gt;&lt;FONT color=#000000&gt;&lt;STRONG&gt;공연&lt;SPAN lang=EN-US&gt;:&lt;/SPAN&gt; 가족뮤지컬 &lt;SPAN lang=EN-US&gt;‘&lt;/SPAN&gt;피터팬&lt;SPAN lang=EN-US&gt;’ (&lt;/SPAN&gt;은평&lt;SPAN lang=EN-US&gt;)&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; COLOR: #555555&quot;&gt;&lt;FONT color=#000000&gt;&lt;STRONG&gt;초대일&lt;SPAN lang=EN-US&gt;: 12&lt;/SPAN&gt;월 &lt;SPAN lang=EN-US&gt;5&lt;/SPAN&gt;일&lt;SPAN lang=EN-US&gt;(&lt;/SPAN&gt;일&lt;SPAN lang=EN-US&gt;)&lt;/SPAN&gt; 오후 &lt;SPAN lang=EN-US&gt;2&lt;/SPAN&gt;시&lt;SPAN lang=EN-US&gt;&amp;nbsp; 5&lt;/SPAN&gt;쌍&lt;SPAN lang=EN-US&gt;(1&lt;/SPAN&gt;인&lt;SPAN lang=EN-US&gt;2&lt;/SPAN&gt;매&lt;SPAN lang=EN-US&gt;)&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 10pt; COLOR: #555555&quot;&gt;&lt;FONT color=#000000&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 10pt; COLOR: #555555&quot;&gt;&lt;FONT color=#000000&gt;당첨되신 분들께서는&lt;/FONT&gt; &lt;A href=&quot;http://www.suksuk.co.kr/mommake/contents_gubun_view.php?same_uno=27233&quot; target=_blank&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt&quot;&gt;여기를 클릭&lt;/SPAN&gt;&lt;/STRONG&gt; &lt;/A&gt;&lt;FONT color=#000000&gt;하셔서 12월 5일 재밌게 관람하시고 후기 남겨주시기 바랍니다. &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 10pt; COLOR: #555555&quot;&gt;&lt;FONT color=#000000&gt;당첨되신 분들은 도치맘카페에 나중에 성함 연락처 알려주시고 가시면 되고요. &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 10pt; COLOR: #555555&quot;&gt;&lt;FONT color=#000000&gt;12월 5일 현장가셔서 쑥쑥닷컴에서 오셨다고 하시면 됩니다. ^^ 당첨자 11월 30일에 발표하겠습니다. 감사합니다. &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/P&gt;
&lt;P align=left&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=left&gt;&lt;STRONG&gt;&lt;/STRONG&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=left&gt;&lt;STRONG&gt;[이벤트 기간] ~11월 29일&lt;/STRONG&gt;&lt;/P&gt;
&lt;P align=left&gt;&lt;STRONG&gt;[이벤트 발표]&amp;nbsp; 11월 30일&lt;/STRONG&gt;&lt;/P&gt;
&lt;P align=left&gt;&lt;STRONG&gt;[선정인원] 5쌍(총10분)&lt;/STRONG&gt;&lt;/P&gt;
&lt;P align=left&gt;&lt;STRONG&gt;&lt;/STRONG&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=left&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=left&gt;&lt;STRONG&gt;&lt;/STRONG&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=left&gt;&lt;STRONG&gt;[이벤트 미션]&lt;/STRONG&gt;&lt;/P&gt;
&lt;P align=left&gt;1. 본 게시물을 본인 블로그에 스크랩 하시고, 그 URL을 댓글에 남겨주세요[전체공개가 필수임]&lt;/P&gt;
&lt;P align=left&gt;2. 아이의 연령, 필요하신 이유를 간단히 작성해 주세요&lt;/P&gt;
&lt;P align=left&gt;3. 받으신후 2주내에 도치맘 정해진 후기란과 본인 블로그,&lt;A href=&quot;http://www.suksuk.co.kr/mommake/contents_gubun_view.php?same_uno=27233&quot; target=_blank&gt; 쑥쑥 게시판&lt;/A&gt;&amp;nbsp;에 후기 남겨주시기 바랍니다. &lt;/P&gt;
&lt;P align=left&gt;서평과 후기는 본인들의 약속입니다. 지키지 못하실 분들은 이벤트 참여 삼가 부탁드립니다.&lt;/P&gt;
&lt;P align=center&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=center&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=center&gt;&amp;nbsp;&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile21.uf.tistory.com/original/143F7F174CEDA5613A1636&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile21.uf.tistory.com/image/143F7F174CEDA5613A1636&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;dochithink_top_100826_dorothia1.jpg&quot; height=&quot;148&quot; width=&quot;663&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;/P&gt;
&lt;P align=center&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=center&gt;&lt;A title=http://cafe.naver.com/dochithink.cafe href=&quot;http://cafe.naver.com/dochithink.cafe&quot; target=_blank&gt;&lt;/A&gt;&lt;/P&gt;
&lt;P align=center&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot; color=#4c511f&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;A href=&quot;http://cafe.naver.com/dochithink.cafe&quot; target=_blank&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-SIZE: 12pt&quot;&gt;http://cafe.naver.com/dochithink.cafe&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/A&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/P&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot; color=#ff0000&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 12pt&quot;&gt;
&lt;P align=center&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot; color=#ff0000&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 12pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 12pt&quot;&gt;&amp;nbsp;&lt;/P&gt;
&lt;P align=center&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot; color=#ff0000&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 12pt&quot;&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;[미서평과 활용 후기 작성안하시는 분들의 활동 정지에 관란 절차 안내]&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/P&gt;
&lt;P align=center&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot; color=#000000&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;1) 기간이 마감되면 최종으로 안올리신 분들께 개별&amp;nbsp;쪽지 다시&amp;nbsp;발송됩니다.&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/P&gt;
&lt;P align=center&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot; color=#000000&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;2)&amp;nbsp;공지후 기간안에 안올리신 분들은 자동 활동정지 됩니다.&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/P&gt;
&lt;P align=center&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot; color=#000000&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;3) &lt;/SPAN&gt;&lt;U&gt;&lt;FONT color=#ff0000&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;활동정지를 해지&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/U&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;하려면--&amp;gt;&lt;/SPAN&gt;&lt;U&gt;&lt;FONT color=#ff0000&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;본인 블로그에 올리신 후기 URL &lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;링크 거시어 젠틀맘님께 쪽지 보내주세요&lt;/SPAN&gt;&lt;/U&gt;&lt;/STRONG&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/P&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;
&lt;P align=center&gt;&lt;FONT style=&quot;BACKGROUND-COLOR: #ffffff&quot; color=#000000&gt;&lt;SPAN style=&quot;FONT-SIZE: 11pt; FONT-FAMILY: Tahoma&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-SIZE: 10pt; FONT-FAMILY: 994265_10&quot;&gt;서평자분들과 리뷰어 분들은 후기 작성 기간내에 꼭 후기 작성 부탁드립니다 
&lt;DIV class=autosourcing-stub&gt;
&lt;P style=&quot;PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-SIZE: 12px; PADDING-BOTTOM: 0px; MARGIN: 20px 0px 30px; PADDING-TOP: 0px; FONT-FAMILY: dotum&quot;&gt;&lt;STRONG style=&quot;PADDING-RIGHT: 7px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px&quot;&gt;[출처]&lt;/STRONG&gt; &lt;A href=&quot;http://cafe.naver.com/dochithink/165288&quot; target=_blank&gt;[이벤트] 은평문화예술회관에서 진행되는 가족 뮤지컬 &quot;피터팬&quot;에 도치맘 회원 5쌍 초대합니다.(~11월29일) ([도치맘카페]도치엄마들의생각키우기)&lt;/A&gt; &lt;SPAN style=&quot;PADDING-RIGHT: 7px; PADDING-LEFT: 5px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px&quot;&gt;|&lt;/SPAN&gt;&lt;STRONG style=&quot;PADDING-RIGHT: 7px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; PADDING-TOP: 0px&quot;&gt;작성자&lt;/STRONG&gt; &lt;A href=&quot;http://cafe.naver.com/dochithink.cafe?iframe_url=/CafeMemberNetworkView.nhn%3Fm=view%26memberid=gossi777&quot; target=_blank&gt;도치해피맘&lt;/A&gt;&lt;/P&gt;&lt;/DIV&gt;&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;
&lt;P&gt;&lt;/P&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/DIV&gt;&lt;/DIV&gt;&lt;div class=&quot;entry-ccl&quot; style=&quot;clear: both; text-align: right; margin-bottom: 10px&quot;&gt;
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			<category>육아 경험담</category>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/453</guid>
			<comments>http://misojium.com/453#entry453comment</comments>
			<pubDate>Thu, 25 Nov 2010 08:49:34 +0900</pubDate>
		</item>
		<item>
			<title>빅파일 체험이벤트 비비라이너 당첨됬어요.. 정말 좋아요~~ 적은시간에 최고의 효과 최코~!!</title>
			<link>http://misojium.com/452</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
			&lt;!-- Creative Commons License--&gt;
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&lt;DIV&gt;&lt;IMG hideFocus style=&quot;BORDER-RIGHT: #8c8c8c 0px solid; BORDER-TOP: #8c8c8c 0px solid; BORDER-LEFT: #8c8c8c 0px solid; WIDTH: 650px; BORDER-BOTTOM: #8c8c8c 0px solid; selector-dummy: true&quot; src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20101011/201010110915021717064.jpg&quot; border=0 name=target_resize_image[]&gt;&lt;br /&gt;
&lt;br /&gt;이자세는 가슴업시키는 자세입니다 &lt;br /&gt;
&lt;br /&gt;&lt;/DIV&gt;
&lt;DIV&gt;&lt;IMG hideFocus style=&quot;BORDER-RIGHT: #8c8c8c 0px solid; BORDER-TOP: #8c8c8c 0px solid; BORDER-LEFT: #8c8c8c 0px solid; BORDER-BOTTOM: #8c8c8c 0px solid; selector-dummy: true&quot; src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20101011/201010110915151849487.jpg&quot; border=0 name=target_resize_image[]&gt;&lt;/DIV&gt;&lt;br /&gt;
설명서보고 조림하면 이런모양이 되고요^^ 설명서보면 누구나 쉽게 조림가능해요&lt;br /&gt;
&lt;br /&gt;
&lt;DIV&gt;&lt;IMG hideFocus style=&quot;BORDER-RIGHT: #8c8c8c 0px solid; BORDER-TOP: #8c8c8c 0px solid; BORDER-LEFT: #8c8c8c 0px solid; WIDTH: 650px; BORDER-BOTTOM: #8c8c8c 0px solid; selector-dummy: true&quot; src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20101011/201010110915291080398.jpg&quot; border=0 name=target_resize_image[]&gt;&lt;/DIV&gt;&lt;br /&gt;
이건 옆구리살 관리해주는 자세입니다&lt;br /&gt;
&lt;br /&gt;
&lt;DIV&gt;&lt;IMG hideFocus style=&quot;BORDER-RIGHT: #8c8c8c 0px solid; BORDER-TOP: #8c8c8c 0px solid; BORDER-LEFT: #8c8c8c 0px solid; WIDTH: 650px; BORDER-BOTTOM: #8c8c8c 0px solid; selector-dummy: true&quot; src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20101011/201010110915481775417.jpg&quot; border=0 name=target_resize_image[]&gt;&lt;/DIV&gt;&lt;br /&gt;
이건 허벅지살관리 해주는 자세이고요&lt;br /&gt;
&lt;br /&gt;
&lt;DIV&gt;&lt;IMG hideFocus style=&quot;BORDER-RIGHT: #8c8c8c 0px solid; BORDER-TOP: #8c8c8c 0px solid; BORDER-LEFT: #8c8c8c 0px solid; BORDER-BOTTOM: #8c8c8c 0px solid; selector-dummy: true&quot; src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20101011/201010110916101021565.jpg&quot; border=0 name=target_resize_image[]&gt;&lt;/DIV&gt;작고 가벼워서 언제어디서나 운동하기 좋아요&lt;br /&gt;
&lt;br /&gt;&lt;br /&gt;

&lt;DIV&gt;&lt;IMG hideFocus style=&quot;BORDER-RIGHT: #8c8c8c 0px solid; BORDER-TOP: #8c8c8c 0px solid; BORDER-LEFT: #8c8c8c 0px solid; BORDER-BOTTOM: #8c8c8c 0px solid; selector-dummy: true&quot; src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20101011/201010110916251652688.jpg&quot; border=0 name=target_resize_image[]&gt;&lt;/DIV&gt;&lt;br /&gt;
이건 등살 관리해주는 자세입니다 등을 바로 펴고해야하는데 잘 안되네요~^^&lt;br /&gt;
&lt;br /&gt;
&lt;DIV&gt;&lt;IMG hideFocus style=&quot;BORDER-RIGHT: #8c8c8c 0px solid; BORDER-TOP: #8c8c8c 0px solid; BORDER-LEFT: #8c8c8c 0px solid; WIDTH: 650px; BORDER-BOTTOM: #8c8c8c 0px solid; selector-dummy: true&quot; src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20101011/201010110916411029850.jpg&quot; border=0 name=target_resize_image[]&gt;&lt;/DIV&gt;&lt;br /&gt;
이건 팔둑살 관리하는 자세입니다&lt;/DIV&gt;
&lt;P&gt;&amp;nbsp;&lt;/P&gt;
&lt;DIV&gt;&lt;IMG hideFocus style=&quot;BORDER-RIGHT: #8c8c8c 0px solid; BORDER-TOP: #8c8c8c 0px solid; BORDER-LEFT: #8c8c8c 0px solid; BORDER-BOTTOM: #8c8c8c 0px solid; selector-dummy: true&quot; src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20101011/201010110919501703045.jpg&quot; border=0 name=target_resize_image[]&gt;&lt;br /&gt;
&amp;nbsp;&lt;br /&gt;
&lt;/DIV&gt;
&lt;DIV&gt;TV보면서 아무때나 짬날때마다 할 수있어 너무 좋아요&lt;br /&gt;
옆에다 두고 보일때마다 너무 잘 사용하고 있어요^^&lt;br /&gt;
감사합니다.^^&lt;/DIV&gt;
&lt;P&gt;&lt;br /&gt;
&amp;nbsp;&lt;/P&gt;&lt;br /&gt;
&lt;A href=&quot;http://www.bigfile.co.kr/bignfun/happy_exp/happy_exp_review_view.php?exp_id=10816&amp;amp;review_id=15157&quot;&gt;&lt;IMG src=&quot;http://img.bigfile.co.kr/conts_images2/upload_images/20100607/201006070609241836433.gif&quot; border=0&gt;&lt;/A&gt; &lt;div class=&quot;entry-ccl&quot; style=&quot;clear: both; text-align: right; margin-bottom: 10px&quot;&gt;
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</description>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/452</guid>
			<comments>http://misojium.com/452#entry452comment</comments>
			<pubDate>Mon, 11 Oct 2010 21:38:31 +0900</pubDate>
		</item>
		<item>
			<title>html 특수문자표</title>
			<link>http://misojium.com/449</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
			&lt;!-- Creative Commons License--&gt;
			&lt;!-- &lt;rdf:RDF xmlns=&quot;http://web.resource.org/cc/&quot; xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot; xmlns:rdf=&quot;http://www.w3.org/1999/02/22-rdf-syntax-ns#&quot;&gt;
			&lt;Work rdf:about=&quot;&quot;&gt;
			&lt;license rdf:resource=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; /&gt;
			&lt;/Work&gt;
			&lt;License rdf:about=&quot;http://creativecommons.org/licenses/by-nc-sa/&quot;&gt;
			&lt;permits rdf:resource=&quot;http://web.resource.org/cc/Reproduction&quot;/&gt;
			&lt;permits rdf:resource=&quot;http://web.resource.org/cc/Distribution&quot;/&gt;
			&lt;requires rdf:resource=&quot;http://web.resource.org/cc/Notice&quot;/&gt;
			&lt;requires rdf:resource=&quot;http://web.resource.org/cc/Attribution&quot;/&gt;
			&lt;permits rdf:resource=&quot;http://web.resource.org/cc/DerivativeWorks&quot;/&gt;
			&lt;requires rdf:resource=&quot;http://web.resource.org/cc/ShareAlike&quot;/&gt;&lt;prohibits rdf:resource=&quot;http://web.resource.org/cc/CommercialUse&quot;/&gt;&lt;/License&gt;&lt;/rdf:RDF&gt; --&gt;&lt;/div&gt;&lt;/fieldset&gt;&lt;TABLE width=600 align=center&gt;
&lt;TBODY&gt;
&lt;TR&gt;
&lt;TD bgColor=#98fb90&gt;
&lt;UL&gt;
&lt;LI&gt;&amp;amp;#32; = 
&lt;LI&gt;&amp;amp;#33; = ! 
&lt;LI&gt;&amp;amp;#34; = &quot; 
&lt;LI&gt;&amp;amp;#35; = # 
&lt;LI&gt;&amp;amp;#36; = $ 
&lt;LI&gt;&amp;amp;#37; = % 
&lt;LI&gt;&amp;amp;#38; = &amp;amp; 
&lt;LI&gt;&amp;amp;#39; = &#039; 
&lt;LI&gt;&amp;amp;#40; = ( 
&lt;LI&gt;&amp;amp;#41; = ) 
&lt;LI&gt;&amp;amp;#42; = * 
&lt;LI&gt;&amp;amp;#43; = + 
&lt;LI&gt;&amp;amp;#44; = , 
&lt;LI&gt;&amp;amp;#45; = - 
&lt;LI&gt;&amp;amp;#46; = . 
&lt;LI&gt;&amp;amp;#47; = / 
&lt;LI&gt;&amp;amp;#48; = 0 
&lt;LI&gt;&amp;amp;#49; = 1 
&lt;LI&gt;&amp;amp;#50; = 2 
&lt;LI&gt;&amp;amp;#51; = 3 
&lt;LI&gt;&amp;amp;#52; = 4 
&lt;LI&gt;&amp;amp;#53; = 5 
&lt;LI&gt;&amp;amp;#54; = 6 
&lt;LI&gt;&amp;amp;#55; = 7 
&lt;LI&gt;&amp;amp;#56; = 8 
&lt;LI&gt;&amp;amp;#57; = 9 
&lt;LI&gt;&amp;amp;#58; = : 
&lt;LI&gt;&amp;amp;#59; = ; 
&lt;LI&gt;&amp;amp;#60; = &amp;lt; 
&lt;LI&gt;&amp;amp;#61; = = 
&lt;LI&gt;&amp;amp;#62; = &amp;gt; 
&lt;LI&gt;&amp;amp;#63; = ? 
&lt;LI&gt;&amp;amp;#64; = @ 
&lt;LI&gt;&amp;amp;#65; = A 
&lt;LI&gt;&amp;amp;#66; = B 
&lt;LI&gt;&amp;amp;#67; = C 
&lt;LI&gt;&amp;amp;#68; = D 
&lt;LI&gt;&amp;amp;#69; = E 
&lt;LI&gt;&amp;amp;#70; = F 
&lt;LI&gt;&amp;amp;#71; = G 
&lt;LI&gt;&amp;amp;#72; = H 
&lt;LI&gt;&amp;amp;#73; = I 
&lt;LI&gt;&amp;amp;#74; = J 
&lt;LI&gt;&amp;amp;#75; = K 
&lt;LI&gt;&amp;amp;#76; = L 
&lt;LI&gt;&amp;amp;#77; = M 
&lt;LI&gt;&amp;amp;#78; = N 
&lt;LI&gt;&amp;amp;#79; = O 
&lt;LI&gt;&amp;amp;#80; = P 
&lt;LI&gt;&amp;amp;#81; = Q &lt;/LI&gt;&lt;/UL&gt;&lt;/TD&gt;
&lt;TD vAlign=top bgColor=#98fbb0&gt;
&lt;UL&gt;
&lt;LI&gt;&amp;amp;#82; = R 
&lt;LI&gt;&amp;amp;#83; = S 
&lt;LI&gt;&amp;amp;#84; = T 
&lt;LI&gt;&amp;amp;#85; = U 
&lt;LI&gt;&amp;amp;#86; = V 
&lt;LI&gt;&amp;amp;#87; = W 
&lt;LI&gt;&amp;amp;#88; = X 
&lt;LI&gt;&amp;amp;#89; = Y 
&lt;LI&gt;&amp;amp;#90; = Z 
&lt;LI&gt;&amp;amp;#91; = [ 
&lt;LI&gt;&amp;amp;#92; = \ 
&lt;LI&gt;&amp;amp;#93; = ] 
&lt;LI&gt;&amp;amp;#94; = ^ 
&lt;LI&gt;&amp;amp;#95; = _ 
&lt;LI&gt;&amp;amp;#96; = ` 
&lt;LI&gt;&amp;amp;#97; = a 
&lt;LI&gt;&amp;amp;#98; = b 
&lt;LI&gt;&amp;amp;#99; = c 
&lt;LI&gt;&amp;amp;#100; = d 
&lt;LI&gt;&amp;amp;#101; = e 
&lt;LI&gt;&amp;amp;#102; = f 
&lt;LI&gt;&amp;amp;#103; = g 
&lt;LI&gt;&amp;amp;#104; = h 
&lt;LI&gt;&amp;amp;#105; = i 
&lt;LI&gt;&amp;amp;#106; = j 
&lt;LI&gt;&amp;amp;#107; = k 
&lt;LI&gt;&amp;amp;#108; = l 
&lt;LI&gt;&amp;amp;#109; = m 
&lt;LI&gt;&amp;amp;#110; = n 
&lt;LI&gt;&amp;amp;#111; = o 
&lt;LI&gt;&amp;amp;#112; = p 
&lt;LI&gt;&amp;amp;#113; = q 
&lt;LI&gt;&amp;amp;#114; = r 
&lt;LI&gt;&amp;amp;#115; = s 
&lt;LI&gt;&amp;amp;#116; = t 
&lt;LI&gt;&amp;amp;#117; = u 
&lt;LI&gt;&amp;amp;#118; = v 
&lt;LI&gt;&amp;amp;#119; = w 
&lt;LI&gt;&amp;amp;#120; = x 
&lt;LI&gt;&amp;amp;#121; = y 
&lt;LI&gt;&amp;amp;#122; = z 
&lt;LI&gt;&amp;amp;#123; = { 
&lt;LI&gt;&amp;amp;#124; = | 
&lt;LI&gt;&amp;amp;#125; = } 
&lt;LI&gt;&amp;amp;#126; = ~ &lt;/LI&gt;&lt;/UL&gt;&lt;/TD&gt;
&lt;TD bgColor=#98fbd0&gt;
&lt;UL&gt;
&lt;LI&gt;&amp;amp;#161; = ¡ 
&lt;LI&gt;&amp;amp;#162; = ¢ 
&lt;LI&gt;&amp;amp;#163; = £ 
&lt;LI&gt;&amp;amp;#164; = ¤ 
&lt;LI&gt;&amp;amp;#165; = ¥ 
&lt;LI&gt;&amp;amp;#166; = ¦ 
&lt;LI&gt;&amp;amp;#167; = § 
&lt;LI&gt;&amp;amp;#168; = ¨ 
&lt;LI&gt;&amp;amp;#169; = © 
&lt;LI&gt;&amp;amp;#170; = ª 
&lt;LI&gt;&amp;amp;#171; = « 
&lt;LI&gt;&amp;amp;#172; = ¬ 
&lt;LI&gt;&amp;amp;#173; = &amp;shy; 
&lt;LI&gt;&amp;amp;#174; = ® 
&lt;LI&gt;&amp;amp;#175; = ¯ 
&lt;LI&gt;&amp;amp;#176; = ° 
&lt;LI&gt;&amp;amp;#177; = ± 
&lt;LI&gt;&amp;amp;#178; = ² 
&lt;LI&gt;&amp;amp;#179; = ³ 
&lt;LI&gt;&amp;amp;#180; = ´ 
&lt;LI&gt;&amp;amp;#181; = µ 
&lt;LI&gt;&amp;amp;#182; = ¶ 
&lt;LI&gt;&amp;amp;#183; = · 
&lt;LI&gt;&amp;amp;#184; = ¸ 
&lt;LI&gt;&amp;amp;#185; = ¹ 
&lt;LI&gt;&amp;amp;#186; = º 
&lt;LI&gt;&amp;amp;#187; = » 
&lt;LI&gt;&amp;amp;#188; = ¼ 
&lt;LI&gt;&amp;amp;#189; = ½ 
&lt;LI&gt;&amp;amp;#190; = ¾ 
&lt;LI&gt;&amp;amp;#191; = ¿ 
&lt;LI&gt;&amp;amp;#192; = À 
&lt;LI&gt;&amp;amp;#193; = Á 
&lt;LI&gt;&amp;amp;#194; = Â 
&lt;LI&gt;&amp;amp;#195; = Ã 
&lt;LI&gt;&amp;amp;#196; = Ä 
&lt;LI&gt;&amp;amp;#197; = Å 
&lt;LI&gt;&amp;amp;#198; = Æ 
&lt;LI&gt;&amp;amp;#199; = Ç 
&lt;LI&gt;&amp;amp;#200; = È 
&lt;LI&gt;&amp;amp;#201; = É 
&lt;LI&gt;&amp;amp;#202; = Ê 
&lt;LI&gt;&amp;amp;#203; = Ë 
&lt;LI&gt;&amp;amp;#204; = Ì 
&lt;LI&gt;&amp;amp;#205; = Í 
&lt;LI&gt;&amp;amp;#206; = Î 
&lt;LI&gt;&amp;amp;#207; = Ï 
&lt;LI&gt;&amp;amp;#208; = Ð 
&lt;LI&gt;&amp;amp;#209; = Ñ 
&lt;LI&gt;&amp;amp;#210; = Ò &lt;/LI&gt;&lt;/UL&gt;&lt;/TD&gt;
&lt;TD vAlign=top bgColor=#98fbf0&gt;
&lt;UL&gt;
&lt;LI&gt;&amp;amp;#211; = Ó 
&lt;LI&gt;&amp;amp;#212; = Ô 
&lt;LI&gt;&amp;amp;#213; = Õ 
&lt;LI&gt;&amp;amp;#214; = Ö 
&lt;LI&gt;&amp;amp;#215; = × 
&lt;LI&gt;&amp;amp;#216; = Ø 
&lt;LI&gt;&amp;amp;#217; = Ù 
&lt;LI&gt;&amp;amp;#218; = Ú 
&lt;LI&gt;&amp;amp;#219; = Û 
&lt;LI&gt;&amp;amp;#220; = Ü 
&lt;LI&gt;&amp;amp;#221; = Ý 
&lt;LI&gt;&amp;amp;#222; = Þ 
&lt;LI&gt;&amp;amp;#223; = ß 
&lt;LI&gt;&amp;amp;#224; = à 
&lt;LI&gt;&amp;amp;#225; = á 
&lt;LI&gt;&amp;amp;#226; = â 
&lt;LI&gt;&amp;amp;#227; = ã 
&lt;LI&gt;&amp;amp;#228; = ä 
&lt;LI&gt;&amp;amp;#229; = å 
&lt;LI&gt;&amp;amp;#230; = æ 
&lt;LI&gt;&amp;amp;#231; = ç 
&lt;LI&gt;&amp;amp;#232; = è 
&lt;LI&gt;&amp;amp;#233; = é 
&lt;LI&gt;&amp;amp;#234; = ê &lt;/LI&gt;&lt;/UL&gt;&lt;/TD&gt;&lt;/TR&gt;&lt;/TBODY&gt;&lt;/TABLE&gt;&lt;A name=symbolic&gt;
&lt;UL&gt;
&lt;LI&gt;&lt;STRONG&gt;&lt;FONT color=blue&gt;아래는 Symbolic HTML entity입니다&lt;/FONT&gt; 
&lt;LI&gt;&lt;STRONG&gt;이제 NetScape사용자 분들도 제데로 보이시죠. 명심하실것은 quot,amp,lt,gt,nbsp 다섯개 이외의 것은 모두 &lt;FONT color=red&gt;&amp;lt; PRE &amp;gt; tag로 묽어준 안에서만&lt;/FONT&gt; 제대로 나타난다는 겁니다 잊지마시길 .. &lt;/STRONG&gt;여기까지 읽어주셔서 감사합니다. 즐거운 하루되세요 
&lt;LI&gt;&amp;amp;nbsp; 는 빈칸, space입니다 &lt;/LI&gt;&lt;/UL&gt;
&lt;TABLE width=600 align=center&gt;
&lt;TBODY&gt;
&lt;TR&gt;
&lt;TD bgColor=#98fb90&gt;
&lt;UL&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;quot; = &quot;&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;amp;  = &amp;amp;&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;lt;   = &amp;lt;&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;gt;   = &amp;gt;&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;nbsp; = &amp;nbsp;&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;iexcl;  = ¡&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;cent;   = ¢&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;pound;  = £&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;curren; = ¤&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;yen;    = ¥&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;brvbar; = ¦&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;sect;   = §&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;uml;    = ¨&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;copy;   = ©&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ordf;   = ª&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;laquo;  = «&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;not;    = ¬&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;shy;    = &amp;shy;&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;reg;    = ®&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;macr;   = ¯&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;deg;    = °&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;plusmn; = ±&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;sup2;   = ²&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;sup3;   = ³&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;acute;  = ´&lt;/PRE&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/TD&gt;
&lt;TD bgColor=#98fbb0&gt;
&lt;UL&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;micro;  = µ&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;para;   = ¶&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;middot; = ·&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;cedil;  = ¸&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;sup1;   = ¹&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ordm;   = º&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;raquo;  = »&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;frac14; = ¼&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;frac12; = ½&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;frac34; = ¾&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;iquest; = ¿&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;agrave; = à&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;aacute; = á&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;acirc;  = â&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;atilde; = ã&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;auml;   = ä&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;aring;  = å&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;aelig;  = æ&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ccedil; = ç&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;egrave; = è&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;eacute; = é&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ecirc;  = ê&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;euml;   = ë&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;igrave; = ì&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;iacute; = í&lt;/PRE&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/TD&gt;
&lt;TD bgColor=#98fbd0&gt;
&lt;UL&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;icirc;  = î&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;iuml;   = ï&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;eth;    = ð&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ntilde; = ñ&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ograve; = ò&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;oacute; = ó&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ocirc;  = ô&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;otilde; = õ&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ouml;   = ö&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;times;  = ×&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;oslash; = ø&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ugrave; = ù&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;uacute; = ú&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ucirc;  = û&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;uuml;   = ü&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;yacute; = ý&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;thorn;  = þ&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;szlig;  = ß&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;agrave; = à&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;aacute; = á&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;acirc;  = â&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;atilde; = ã&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;auml;   = ä&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;aring;  = å&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;aelig;  = æ&lt;/PRE&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/TD&gt;
&lt;TD bgColor=#98fbf0&gt;
&lt;UL&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ccedil; = ç&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;egrave; = è&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;eacute; = é&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ecirc;  = ê&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;euml;   = ë&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;igrave; = ì&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;iacute; = í&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;icirc;  = î&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;iuml;   = ï&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;eth;    = ð&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ntilde; = ñ&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ograve; = ò&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;oacute; = ó&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ocirc;  = ô&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;otilde; = õ&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ouml;   = ö&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;divide; = ÷&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;oslash; = ø&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ugrave; = ù&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;uacute; = ú&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;ucirc;  = û&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;uuml;   = ü&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;yacute; = ý&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;thorn;  = þ&lt;/PRE&gt;
&lt;LI&gt;&lt;PRE&gt;&amp;amp;yuml;   =  ÿ&lt;/PRE&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/TD&gt;&lt;/TR&gt;&lt;/TBODY&gt;&lt;/TABLE&gt;&lt;/A&gt;&lt;/STRONG&gt;&lt;br /&gt;
&lt;br /&gt;&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile7.uf.tistory.com/original/167133114C7DC0AEB6A03A&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile7.uf.tistory.com/image/167133114C7DC0AEB6A03A&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;download.png&quot; height=&quot;863&quot; width=&quot;663&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;br /&gt;&lt;div class=&quot;entry-ccl&quot; style=&quot;clear: both; text-align: right; margin-bottom: 10px&quot;&gt;
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&lt;div class=&quot;tt-plugin tt-share-entry-with-sns tt-sns-icon-alignment-left tt-sns-icon-size-big&quot;&gt;
	&lt;div class=&quot;tt-sns-wrap&quot;&gt;
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			&lt;li class=&quot;tt-sns-service-mypeople&quot;&gt;&lt;a href=&quot;javascript:;&quot; onclick=&quot;ShareEntryWithSNS.share(&#039;mypeople&#039;, &#039;&#039;, &#039;&#039;);&quot;&gt;마이피플&lt;/a&gt;&lt;/li&gt;
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			&lt;li class=&quot;tt-sns-service-other&quot;&gt;&lt;a href=&quot;javascript:;&quot; onmouseover=&quot;ShareEntryWithSNS.showLayer(event, &#039;ttSnsServiceMore-&#039;);&quot; onmouseout=&quot;ShareEntryWithSNS.hideLayer(event, &#039;ttSnsServiceMore-&#039;);&quot;&gt;더보기&lt;/a&gt;&lt;/li&gt;
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		&lt;ul class=&quot;tt-sns-service-more&quot; id=&quot;ttSnsServiceMore-&quot; onmouseout=&quot;ShareEntryWithSNS.hideLayer(event, &#039;ttSnsServiceMore-&#039;);&quot;&gt;
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	&lt;div class=&quot;tt-sns-clear&quot;&gt;&lt;/div&gt;
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&lt;iframe src=&quot;http://www.facebook.com/plugins/like.php?href=misojium.com/449&amp;amp;layout=standard&amp;amp;show_faces=true&amp;amp;width=310&amp;amp;action=like&amp;amp;font=tahoma&amp;amp;colorscheme=light&amp;amp;height=65&quot; scrolling=&quot;no&quot; frameborder=&quot;0&quot; style=&quot;border:none; overflow:hidden; width:310px; height:65px;&quot; allowTransparency=&quot;true&quot;&gt;&lt;/iframe&gt;
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</description>
			<category>Ajax/Xml/w3c/Html5</category>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/449</guid>
			<comments>http://misojium.com/449#entry449comment</comments>
			<pubDate>Wed, 01 Sep 2010 11:55:56 +0900</pubDate>
		</item>
		<item>
			<title>친구가 한턱쏴서 갔었던 종로의 청계천 근처</title>
			<link>http://misojium.com/448</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
			&lt;!-- Creative Commons License--&gt;
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			&lt;Work rdf:about=&quot;&quot;&gt;
			&lt;license rdf:resource=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; /&gt;
			&lt;/Work&gt;
			&lt;License rdf:about=&quot;http://creativecommons.org/licenses/by-nc-sa/&quot;&gt;
			&lt;permits rdf:resource=&quot;http://web.resource.org/cc/Reproduction&quot;/&gt;
			&lt;permits rdf:resource=&quot;http://web.resource.org/cc/Distribution&quot;/&gt;
			&lt;requires rdf:resource=&quot;http://web.resource.org/cc/Notice&quot;/&gt;
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			&lt;permits rdf:resource=&quot;http://web.resource.org/cc/DerivativeWorks&quot;/&gt;
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&lt;br /&gt;중간에 진짜 말이 끄는 마차도 보고 청개천도 내려가 보고 그러다가.. &lt;br /&gt;
&lt;br /&gt;신기한 사진찍는 기계가 눈에 들어와서 한컷.. &lt;br /&gt;
&lt;br /&gt;내 이메일로 전송하니 며칠뒤에야&amp;nbsp;도착했네.. ㅎㅎㅎ &lt;br /&gt;
&lt;br /&gt;그것도 스팸편지함으로.. ㅡㅡ;;; 서버관리자는 조금 신경써야 할 듯.. RFC 규약에 맞추서 보내주시구려.. ㅋㅋ&lt;br /&gt;
&lt;br /&gt;&lt;br /&gt;
&lt;div class=&quot;imageblock center&quot; style=&quot;text-align: center; clear: both;&quot;&gt;&lt;a href=&quot;http://cfile22.uf.tistory.com/original/197552244C6CE028421C07&quot; rel=&quot;lightbox&quot; target=&quot;_blank&quot;&gt;&lt;img src=&quot;http://cfile22.uf.tistory.com/image/197552244C6CE028421C07&quot; alt=&quot;&quot; filemime=&quot;image/jpeg&quot; filename=&quot;20100814_194848.jpg&quot; height=&quot;374&quot; width=&quot;663&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div class=&quot;entry-ccl&quot; style=&quot;clear: both; text-align: right; margin-bottom: 10px&quot;&gt;
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&lt;div class=&quot;tt-plugin tt-share-entry-with-sns tt-sns-icon-alignment-left tt-sns-icon-size-big&quot;&gt;
	&lt;div class=&quot;tt-sns-wrap&quot;&gt;
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			&lt;li class=&quot;tt-sns-service-mypeople&quot;&gt;&lt;a href=&quot;javascript:;&quot; onclick=&quot;ShareEntryWithSNS.share(&#039;mypeople&#039;, &#039;&#039;, &#039;&#039;);&quot;&gt;마이피플&lt;/a&gt;&lt;/li&gt;
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&lt;div style=&quot;text-align:left; padding-top:10px;&quot;&gt;
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</description>
			<category>예진이 사진쳡</category>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/448</guid>
			<comments>http://misojium.com/448#entry448comment</comments>
			<pubDate>Thu, 19 Aug 2010 16:43:15 +0900</pubDate>
		</item>
		<item>
			<title>EXPLAIN을 사용해서 쿼리 최적화 하기</title>
			<link>http://misojium.com/447</link>
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&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT color=#000000&gt;&lt;FONT size=2&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-FAMILY: 굴림체; mso-ansi-language: EN; mso-bidi-font-size: 10.0pt&quot;&gt;7.2.1.&amp;nbsp; EXPLAIN을 사용해서 쿼리 최적화 하기&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;?xml:namespace prefix = o ns = &quot;urn:schemas-microsoft-com:office:office&quot; /&gt;&lt;o:p&gt;&lt;FONT color=#000000&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;EXPLAIN &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;tbl_name&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;EXPLAIN [EXTENDED] SELECT &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;select_options&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;DESCRIBE&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에 대한 동의어로 사용할 수 있거나 또는&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문을 실행하는 방법에 대한 정보를 얻기 위한 수단으로 사용할 수가 있다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l9 level1 lfo5; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt; &lt;I&gt;tbl_name&lt;/I&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;DESCRIBE &lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;I&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tbl_name&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/I&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SHOW COLUMNS FROM &lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;I&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tbl_name&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/I&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;과 동일한 의미이다&lt;SPAN lang=EN&gt;.&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt; 
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l9 level1 lfo5; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문을 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;앞에 두면&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 쿼리 실행 플랜 &lt;SPAN lang=EN&gt;(query execution plan) &lt;/SPAN&gt;정보를 옵티마이저 &lt;SPAN lang=EN&gt;(optimizer)&lt;/SPAN&gt;에서 가져 와서 출력 한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;즉&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 테이블들이 어떤 순서로 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;하는지에 대한 정보를 포함해서&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 처리하는 방법에 대해서 알려 준다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 섹션에서는 쿼리 실행 플랜 정보를 얻기 위한 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;사용법을 설명한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;DESCRIBE&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;및 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SHOW COLUMNS&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문에 대한 설명은 &lt;/FONT&gt;&lt;SPAN lang=EN&gt;Section&amp;nbsp;13.3.1, “&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN style=&quot;COLOR: #006699; mso-bidi-font-size: 9.0pt; mso-ansi-font-size: 9.0pt&quot;&gt;DESCRIBE&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt; &lt;SPAN lang=EN-US&gt;&lt;SPAN lang=EN-US&gt;신텍스&lt;/SPAN&gt;&lt;/SPAN&gt;”&lt;/FONT&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT color=#000000&gt;및 &lt;/FONT&gt;&lt;SPAN lang=EN&gt;Section&amp;nbsp;13.5.4.3, “&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN style=&quot;COLOR: #006699; mso-bidi-font-size: 9.0pt; mso-ansi-font-size: 9.0pt&quot;&gt;SHOW COLUMNS&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt; &lt;/FONT&gt;&lt;SPAN lang=EN-US&gt;&lt;SPAN lang=EN-US&gt;신텍스&lt;/SPAN&gt;&lt;/SPAN&gt;”&lt;/SPAN&gt;&lt;FONT color=#000000&gt;를 참조하기 바란다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 사용함으로써&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;여러분은 테이블의 어느 곳에 인덱스를 추가해야만 열을 찾기 위한 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;가 보다 빠르게 되는지를 알 수 있게 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;또한&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 사용하면 옵티마이저가 최적의 &lt;SPAN lang=EN&gt;(optimal) &lt;/SPAN&gt;순서로 테이블을 조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;할 수 있는지 여부도 검사할 수가 있다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문에 명명되어 있는 테이블의 순서와 상응하게 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;순서를 사용하도록 옵티마이저를 만들기 위해서는&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;명령문에&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;만을 사용하는 대신에&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt; &lt;/B&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT STRAIGHT_JOIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;을 사용해서 시작을 하도록 한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;만일 여러분 생각에는 사용 되어야만 했을 인덱스가 사용되지 않은 상태로 문제를 일으키게 되면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;키의 기수 &lt;SPAN lang=EN&gt;(cardinality)&lt;/SPAN&gt;와 같은 테이블 상태를 업데이트 하기 위해 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체&gt;ANALYZE TABLE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;을 구동 시켜야 하는데&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이것은 옵티마이저의 선택에 영향을 미치게 된다&lt;/FONT&gt;&lt;SPAN lang=EN&gt;&lt;FONT color=#000000&gt;. &lt;/FONT&gt;Section&amp;nbsp;13.5.2.1, “&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN style=&quot;COLOR: #006699; mso-bidi-font-size: 9.0pt; mso-ansi-font-size: 9.0pt&quot;&gt;ANALYZE TABLE&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt; &lt;/FONT&gt;&lt;SPAN lang=EN-US&gt;&lt;SPAN lang=EN-US&gt;신텍스&lt;/SPAN&gt;&lt;/SPAN&gt;”&lt;/SPAN&gt;&lt;FONT color=#000000&gt;를 참조할 것&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt; &lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문에서 사용된 각 테이블 정보 열을 리턴한다&lt;SPAN lang=EN&gt;. MySQL&lt;/SPAN&gt;이 쿼리를 처리하는 동안 읽을 수 있도록 테이블들은 결과물 안에 목록으로 정리가 된다&lt;SPAN lang=EN&gt;. MySQL &lt;/SPAN&gt;은 &lt;EM&gt;&lt;SPAN lang=EN style=&quot;mso-bidi-font-size: 9.0pt; mso-ansi-font-size: 9.0pt&quot;&gt;single-sweep multi-join&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN&gt; &lt;/SPAN&gt;방법을 사용해서 모든 조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;을 풀어 버린다 &lt;SPAN lang=EN&gt;(reslove). &lt;/SPAN&gt;이것은 &lt;SPAN lang=EN&gt;MySQL&lt;/SPAN&gt;이 첫 번째 테이블에서 열을 읽고&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;그 다음에 두 번째 테이블에서 매치 &lt;SPAN lang=EN&gt;(match)&lt;/SPAN&gt;가 되는 것을 찾으며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;세 번째&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;네 번째 등으로 이동을 한다는 것을 의미하는 것이다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;모든 테이블을 처리한 후에&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 선택된 컬럼을 내 보내고 테이블에서 매치되는 다른 열이 있을 때까지 테이블을 역으로 검사한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;그 테이블에서 그 다음 열을 읽고 다음 테이블로 이동을 해서 동일한 과정을 반복 진행한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXTENDED&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;키워드가 사용되면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;EXPLAIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문 다음에&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SHOW WARNINGS&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문을 입력해서 볼 수 있는 기타 정보를 리턴한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이 정보는 옵티마이저가 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문에 있는 컬럼 이름과 테이블을 얼마나 많이 검증을 하였는지를 보여주며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;SELECT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 최적화 과정에 관한 어플리케이션 재 작성과 최적화 규칙&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;그리고 다른 가능한 노트 &lt;SPAN lang=EN&gt;(notes)&lt;/SPAN&gt;를 보여준다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; COLOR: #006699; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 통해서 나오는 각각의 결과 열은 하나의 테이블에 대한 정보이며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;각 열은 아래의 컬럼을 가지고 있다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;id&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;아이덴티파이어 &lt;SPAN lang=EN&gt;(identifier). &lt;/SPAN&gt;이것은 쿼리 안에 있는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;의 순차적인 번호&lt;SPAN lang=EN&gt;(sequential number)&lt;/SPAN&gt;이다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;select_type&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체 color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에 대한 타입이며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;아래의 테이블에 있는 것 중에 하나가 된다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;DIV&gt;
&lt;TABLE class=MsoNormalTable style=&quot;MARGIN: auto auto auto 36pt; mso-cellspacing: 1.5pt&quot; cellPadding=0 border=0&gt;
&lt;TBODY&gt;
&lt;TR style=&quot;mso-yfti-irow: 0; mso-yfti-firstrow: yes&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;SIMPLE&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;Simple &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;(not using &lt;/FONT&gt;&lt;/SPAN&gt;&lt;?xml:namespace prefix = st1 ns = &quot;urn:schemas-microsoft-com:office:smarttags&quot; /&gt;&lt;st1:place w:st=&quot;on&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;UNION&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/st1:place&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; or subqueries)&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 1&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;PRIMARY&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;Outermost &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 2&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;st1:place w:st=&quot;on&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;UNION&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/st1:place&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;Second or later &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; statement in a &lt;/FONT&gt;&lt;/SPAN&gt;&lt;st1:place w:st=&quot;on&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;UNION&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/st1:place&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 3&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;DEPENDENT &lt;st1:place w:st=&quot;on&quot;&gt;UNION&lt;/st1:place&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;Second or later &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; statement in a &lt;/FONT&gt;&lt;/SPAN&gt;&lt;st1:place w:st=&quot;on&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;UNION&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/st1:place&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;, dependent on outer query&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 4&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;UNION RESULT&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;Result of a &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;st1:place w:st=&quot;on&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;UNION&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/st1:place&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 5&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;SUBQUERY&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;First &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; in subquery&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 6&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;DEPENDENT SUBQUERY&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;First &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; in subquery, dependent on outer query&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 7; mso-yfti-lastrow: yes&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;DERIVED&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot;&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt;Derived table &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; (subquery in &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;FROM&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;clause)&lt;/SPAN&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;&lt;/TBODY&gt;&lt;/TABLE&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체 color=#0e4075&gt;DEPENDENT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 전형적으로는 상호 연관된 &lt;SPAN lang=EN&gt;(correlated) &lt;/SPAN&gt;서브 쿼리&lt;SPAN lang=EN&gt;(subquery)&lt;/SPAN&gt;의 사용을 의미한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;table&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;결과 열이 참조하는 테이블&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;type&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 3.6gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;서로 다른 타입의 조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;이 아래에 있는데&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;가장 좋은 것부터 가장 나쁜 것의 순서로 되어 있다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;system&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블은 하나의 열만을 가지고 있다&lt;SPAN lang=EN&gt; (= &lt;/SPAN&gt;시스템 테이블&lt;SPAN lang=EN&gt;). &lt;/SPAN&gt;이것은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;const&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입의 특별한 경우이다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;const&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블은 적어도 하나의 매칭 &lt;SPAN lang=EN&gt;(matching) &lt;/SPAN&gt;테이블을 가지고 있는데&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;쿼리가 시작되는 시점에서 이 테이블을 읽게 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;여기에는 하나의 열만이 존재하기 때문에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이 열에 있는 컬럼에서 얻는 값은 나머지 옵티마이저에 의해 상수 &lt;SPAN lang=EN&gt;(constant)&lt;/SPAN&gt;로 인식될 수 있다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;const&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블은 한번 밖에 읽혀지지 않기 때문에 매우 빠르다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;const&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;PRIMARY KEY&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;UNIQUE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;인덱스의 모든 부분을 상수 값 &lt;SPAN lang=EN&gt;(constant value)&lt;/SPAN&gt;과 비교를 할 때 사용된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;아래의 쿼리에서 보면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;I&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; FONT-FAMILY: 굴림체; mso-ansi-language: EN; mso-bidi-font-family: 굴림체&quot;&gt;tbl_name&lt;/SPAN&gt;&lt;/I&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;const&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블 형태로 사용되고 있다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;tbl_name&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;primery_key&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=1;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;FONT face=굴림체 color=#a1520f&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;tbl_name&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;primery_key_part1&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=1 AND &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;primery_key_part2&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=2;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;eq_ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이전 테이블로부터 각 열을 조합 &lt;SPAN lang=EN&gt;(combination)&lt;/SPAN&gt;하기 위해서 이 테이블의 열을 하나읽는다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;system&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;및 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;const&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;타입과는 달리&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이것이 가장 최선의 가능 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입이다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이것은 조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;에 의해 인덱스의 모든 부분이 사용될 때 쓰이게 되며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이때 인덱스는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;PRIMARY KEY&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;UNIQUE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;인덱스가 된다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;eq_ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;연산자를 사용해서 비교되는 인덱스된 컬럼용으로 사용될 수 있다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;비교 값은 이 테이블 전에 읽었던 테이블에서 컬럼을 사용한 수식 또는 상수 &lt;SPAN lang=EN&gt;(constant)&lt;/SPAN&gt;가 될 수 있다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;아래의 예제에서 보면&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은&lt;/FONT&gt;&lt;/SPAN&gt;&lt;I&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; FONT-FAMILY: 굴림체; mso-ansi-language: EN; mso-bidi-font-family: 굴림체&quot;&gt; ref_table&lt;/SPAN&gt;&lt;/I&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 처리하기 위해서 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;eq_ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;을 사용하고 있다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;,&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;other_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;other_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;FONT face=굴림체 color=#a1520f&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;,&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;other_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column_part1&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;other_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;AND &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column_part2&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=1;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이전 테이블에서 읽어온 각각의 열을 조합하기 위해 이 테이블에서 매칭 &lt;SPAN lang=EN&gt;(matching)&lt;/SPAN&gt;되는 인덱스 값을 가진 모든 열을 읽어온다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;만일 조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;이 키의 좌측 끝&lt;SPAN lang=EN&gt;(leftmost) &lt;/SPAN&gt;접두사 만을 사용하거나 또는 키 값이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;PRIMARY KEY&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;UNIQUE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;인덱스가 아니라면&lt;SPAN lang=EN&gt; (&lt;/SPAN&gt;달리 말하면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;만일 조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;이 키 값을 기반으로 한 단일 &lt;SPAN lang=EN&gt;(single) &lt;/SPAN&gt;열을 선택하지 않는다면&lt;SPAN lang=EN&gt;), &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;가 사용된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;만일 사용된 키가 적은 수의 열에 대해서만 매치가 된다면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;그것은 좋은 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입인 것이다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;lt;=&amp;gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;연산자를 사용해서 비교되는 인덱스된 컬럼에 대해 사용될 수 있다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;아래의 예제에서 본다면&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;I&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; FONT-FAMILY: 굴림체; mso-ansi-language: EN; mso-bidi-font-family: 굴림체&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/I&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt; &lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;처리 과정에서 &lt;/SPAN&gt;&lt;/FONT&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;을 사용한다&lt;SPAN lang=EN&gt;.&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;expr&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;FONT face=굴림체 color=#a1520f&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;,&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;other_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;other_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;FONT face=굴림체 color=#a1520f&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;,&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;other_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column_part1&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;other_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;AND &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;.&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column_part2&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=1;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref_or_null&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;과 유사하지만&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;NULL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값을 가지고 있는 열에 대해서도 검색을 한다는 점에서 차이가 있다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입 최적화는 서브 쿼리&lt;SPAN lang=EN&gt;(subqueries)&lt;/SPAN&gt;를 해석할 때 자주 사용된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;아래의 예제에서 보면&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;I&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; FONT-FAMILY: 굴림체; mso-ansi-language: EN; mso-bidi-font-family: 굴림체&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/I&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;처리 과정에서 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref_or_null&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;을 사용하고 있다&lt;SPAN lang=EN&gt;.&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;ref_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;expr&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; OR &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; IS NULL;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;index_merge&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입은 인덱스 병합 최적화가 사용되었음을 나타낸다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이 경우에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;결과 열에 있는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은 사용된 인덱스 리스트를 가지고 있고&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key_len&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 사용된 인덱스에 대해서 가장 긴 키 부분의 리스트를 가지고 있다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;unique_subquery&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 타입은 아래 형태의 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;IN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;서브 쿼리 &lt;SPAN lang=EN&gt;(subqueries)&lt;/SPAN&gt;에 대해서 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 대체한다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;value&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; IN (SELECT &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;primary_key&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;single_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;some_expr&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;)&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체 color=#0e4075&gt;unique_subquery&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 효율성을 위해서 서브 쿼리 &lt;SPAN lang=EN&gt;(subquery)&lt;/SPAN&gt;를 대체하는 인덱스 룩업&lt;SPAN lang=EN&gt;(lookup) &lt;/SPAN&gt;함수이다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;index_subquery&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이것은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;unique_subquery&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;와 유사한 조인&lt;SPAN lang=EN&gt; (join) &lt;/SPAN&gt;타입이다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이것은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;IN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;서브 쿼리&lt;SPAN lang=EN&gt;(subqueries)&lt;/SPAN&gt;를 대체하지만&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;아래 형태의 서브 쿼리 &lt;SPAN lang=EN&gt;(subquery)&lt;/SPAN&gt;에 있는 논&lt;SPAN lang=EN&gt;-&lt;/SPAN&gt;유니크&lt;SPAN lang=EN&gt;(non-unique)&lt;/SPAN&gt;인덱스에 대해서도 동작을 한다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;value&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; IN (SELECT &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;single_table&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;some_expr&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;)&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;range&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;주어진 범위에 들어 있는 열만을 추출하며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;열 선택은 인덱스를 사용한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;결과 열에 있는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은 어떤 인덱스가 사용되었는지를 가리킨다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key_len&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;은 사용된 키에서 가장 긴 부분을 가진다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은 이 타입에 대해서는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;NULL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값이 된다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;range&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 키 컬럼이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;lt;&amp;gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;,&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt; &lt;/B&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;lt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;lt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;IS NULL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;lt;=&amp;gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;BETWEEN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;IN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;연산자를 사용하는 상수 &lt;SPAN lang=EN&gt;(constant)&lt;/SPAN&gt;와 비교할 때 사용될 수 있다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;tbl_name&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; = 10;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;FONT face=굴림체 color=#a1520f&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;tbl_name&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; BETWEEN 10 and 20;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;FONT face=굴림체 color=#a1520f&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;tbl_name&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_column&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; IN (10,20,30);&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;FONT face=굴림체 color=#a1520f&gt;&amp;nbsp;&lt;/FONT&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;SELECT * FROM &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;tbl_name&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_part1&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;= 10 AND &lt;/FONT&gt;&lt;/SPAN&gt;&lt;EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #0e4075; mso-ansi-language: EN&quot;&gt;key_part2&lt;/SPAN&gt;&lt;/EM&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt; IN (10,20,30);&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/PRE&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;index&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ALL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;과 동일하지만&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;인덱스 트리 &lt;SPAN lang=EN&gt;(index tree)&lt;/SPAN&gt;만을 스캔한다는 점에서 다르다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;일반적으로&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;보통의 인덱스 파일이 데이터 파일보다 작기 때문에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이것은 &lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ALL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;보다는 빠르게 동작한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;MySQL&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;은 쿼리가 단일 인덱스의 일부분인 컬럼만을 사용할 때 이 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입을 사용한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ALL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이전 테이블에서 읽어온 각각의 열을 조합하기 위해 전체 테이블 스캔을 실행한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;테이블이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;const&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;가 표시되지 않은 첫 번째 테이블이고&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;다른 모든 경우에 있어서 매우 좋지 않은 경우라면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이것은 그리 좋은 경우가 아니다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;일반적인 경우에는&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이전 테이블에서 가져온 상수&lt;SPAN lang=EN&gt;(constant) &lt;/SPAN&gt;값 또는 컬럼 값을 사용해서 테이블 열을 추출하는 인덱스를 추가하면 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ALL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;을 피할 수가 있다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;possible_keys&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 34.8pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 3.48gd&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;possible_keys&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은 이 테이블에서 열을 찾기 위해 &lt;SPAN lang=EN&gt;MySQL&lt;/SPAN&gt;이 선택한 인덱스를 가리킨다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이 컬럼은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;결과에서 나타나는 테이블 순서와는 전적으로 별개의 순서가 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이것은&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;possible_keys&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에 있는 키 중에 어떤 것들은 테이블 순서를 만드는 과정에서는 사용되지 않을 수도 있음을 의미하는 것이다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 3.6gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;만일 이 컬럼 값이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;NULL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이라면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;연관된 인덱스가 존재하지 않게 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이와 같은 경우&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;여러분은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;WHERE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;구문을 검사해서&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이 구문이 인덱스 하기에 적당한 컬럼을 참조하고 있는지 여부를 알아 봄으로써 쿼리 속도를 개선 시킬 수가 있게 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;그러한 경우라면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;적절한 인덱스를 하나 생성한 후에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;을 다시 사용해서 쿼리를 검사한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 3.6gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블이 어떤 인덱스를 가지고 있는지를 보기 위해서는&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;SHOW INDEX FROM&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt; &lt;I&gt;tbl_name&lt;/I&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 사용한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 3.6gd&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 실제로 사용할 예정인 키 &lt;SPAN lang=EN&gt;(&lt;/SPAN&gt;인덱스&lt;SPAN lang=EN&gt;)&lt;/SPAN&gt;를 가리킨다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;만일 아무런 인덱스도 선택되지 않았다면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;그 키는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;NULL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 된다&lt;SPAN lang=EN&gt;. MySQL&lt;/SPAN&gt;로 하여금 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;possible_keys&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼에 있는 인덱스를 사용하거나 또는 무시하도록 만들기 위해서&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;FORCE INDEX&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;USE INDEX&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;IGNORE INDEX&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 쿼리에서 사용하도록 한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;MyISAM&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;및 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;BDB&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블의 경우에는&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ANALYZE TABLE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 구동시키면 옵티마이저가 보다 좋은 인덱스를 선택하도록 도움을 줄 수가 있다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;MyISAM&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블의 경우에는&lt;/FONT&gt;&lt;SPAN lang=EN&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-WEIGHT: normal; COLOR: #990000; FONT-FAMILY: 굴림체&quot;&gt;myisamchk --analyze&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT color=#000000&gt;가 동일한 역할을 한다&lt;SPAN lang=EN&gt;.&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key_len&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key_len&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 사용하기로 결정한 키의 길이를 나타낸다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;만일 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;NULL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이라면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이 값도&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT color=#0e4075&gt;&lt;CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt; &lt;/SPAN&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;NULL&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key_len&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값은 다중&lt;SPAN lang=EN&gt;-&lt;/SPAN&gt;부분 &lt;SPAN lang=EN&gt;(multiple-part) &lt;/SPAN&gt;키 중에 얼마나 많은 부분을&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 실제로 사용하는지를 여러분이 알 수 있도록 해 준다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ref&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은 테이블에서 열을 선택하기 위해 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;key&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼 안에 명명되어 있는 인덱스를 어떤 컬럼 또는 상수&lt;SPAN lang=EN&gt;(constant)&lt;/SPAN&gt;와 비교하는지를 보여준다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;rows&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;rows&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 쿼리를 실행하기 위해 조사해야 하는 열의 숫자를 가리킨다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level1 lfo6; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Extra&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 36pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 컬럼은&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 쿼리를 어떻게 해석하는지에 관한 추가적인 정보를 제공한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이 컬럼이 가질 수 있는 값은 다음과 같다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Distinct&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;MySQL&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;은 명확한 값 &lt;SPAN lang=EN&gt;(distinct value)&lt;/SPAN&gt;를 찾게 되며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;따라서&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 매칭되는 열을 찾게 되면 더 이상의 열에 대해서는 검색을 중단한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;/FONT&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Not exists&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;MySQL&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;은 쿼리상에서 &lt;/SPAN&gt;&lt;/FONT&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;LEFT JOIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;최적화를 실행 했으며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이 최적화와 매치되는 열을 찾은 후에는 더 이상 이 테이블에서 이전 열 조합 검색을 하지 않게 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이러한 방식으로 최적화가 되는 쿼리 타입의 예는 다음과 같다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;SELECT * FROM t1 LEFT JOIN t2 ON t1.id=t2.id&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;WHERE t2.id IS NULL;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t2.id&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;NOT NULL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;로 정의했다고 가정하자&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이와 같은 경우&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t1&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;을 스캔하고 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t1.id&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값을 사용해서&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT color=#0e4075&gt;&lt;CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt; &lt;/SPAN&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;t2&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에 있는 열을 검색한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;만일&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t2&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에서 매칭되는 열을 발견하면&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t2.id&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;가 결코 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;NULL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 아님을 알게 되며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;따라서 동일한 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;id&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값을 가지고 있는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t2&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에서는 더 이상 열을 스캔하지 않게 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;달리 표현하면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t1&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에 있는 각 열에 대해서&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t2&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에서는 단일 검색 &lt;SPAN lang=EN&gt;(lookup)&lt;/SPAN&gt;만을 하게 되며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;t2&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에서 실제로 얼마나 많은 열이 매치가 되는지는 상관이 없게 된다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;range checked for each record (index map: &lt;I&gt;N&lt;/I&gt;)&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;MySQL&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;은 사용하기에 좋은 인덱스를 찾지 못했으나&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이전 테이블에서 컬럼 값을 찾고 난 후에는 사용할 수도 있을 법한 인덱스는 알아냈다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이전 테이블에 있는 각 열 조합에 대해서는&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;은 그 조합이 열을 추출하기 위해서 &lt;/SPAN&gt;&lt;/FONT&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;range&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;index_merge&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;접근 방식을 사용할 수 있는지를 검사한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이 방법은 그리 빠른 방법은 아니지만&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;인덱스를 전혀 사용하지 않는 것 보다는 빠르게 진행한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using filesort&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;MySQL&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;은 저장된 순서에 따라서 열을 추출하는 방법을 찾기 위해 기타 과정을 진행한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;정렬 &lt;SPAN lang=EN&gt;(sort)&lt;/SPAN&gt;은 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입과 정렬 키 및 &lt;/SPAN&gt;&lt;/FONT&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;WHERE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;구문과 매치가 되는 모든 열에 대한 열 포인터 &lt;SPAN lang=EN&gt;(pointer)&lt;/SPAN&gt;를 사용해서 모든 열에 걸쳐 진행 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;그런 다음에 그 키는 저장이 되고 열은 저장 순서에 따라서 추출된다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using index&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;인덱스 트리에 있는 정보만을 가지고 테이블에서 컬럼 정보를 추출한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;쿼리가 단일 인덱스의 일부 컬럼만을 사용하는 경우에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이러한 전략을 사용할 수가 있다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using temporary&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;쿼리를 해석하기 위해서는&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;결과를 저장할 임시 테이블을 하나 생성해야 한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;만일 쿼리가 컬럼을 서로 다르게 목록화 하는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;GROUP BY&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;및 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ORDER BY&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;구문을 가지고 있는 경우에 이런 것이 일어나게 된다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using where&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;WHERE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;구문은 다음 테이블에 대한 열 매치 &lt;SPAN lang=EN&gt;(match) &lt;/SPAN&gt;또는 클라이언트에 보내지는 열을 제한하기 위해 사용된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;테이블에서 모든 열을 조사하거나 불러올 의도가 특별히 없다면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Extra&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using where&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;가 아니고&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;테이블 조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;타입이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ALL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;index&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;일 경우에는 쿼리에 문제가 생길 수도 있다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;만일 여러분이 가능한 한 빠른 쿼리를 만들고 싶다면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Extra&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using filesort&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;및 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using temporary&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값을 조사하도록 한다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using sort_union(...)&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using union(...)&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using intersect(...)&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이것들은 인덱스 스캔이 어떻게 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;index_merge&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조인 타입과 병합 &lt;SPAN lang=EN&gt;(merge)&lt;/SPAN&gt;이 되는지를 나타낸다&lt;/FONT&gt;&lt;SPAN lang=EN&gt;&lt;FONT color=#000000&gt;. &lt;/FONT&gt;Section&amp;nbsp;7.2.6, “&lt;SPAN lang=EN-US&gt;&lt;SPAN lang=EN-US&gt;인덱스&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;SPAN lang=EN-US&gt;&lt;SPAN lang=EN-US&gt; &lt;/SPAN&gt;&lt;/SPAN&gt;&lt;SPAN lang=EN-US&gt;&lt;SPAN lang=EN-US&gt;병합&lt;/SPAN&gt;&lt;/SPAN&gt;&lt;SPAN lang=EN-US&gt;&lt;SPAN lang=EN-US&gt; &lt;/SPAN&gt;&lt;/SPAN&gt;&lt;SPAN lang=EN-US&gt;&lt;SPAN lang=EN-US&gt;최적화&lt;/SPAN&gt;&lt;/SPAN&gt;”&lt;/SPAN&gt;&lt;FONT color=#000000&gt;를 참조할 것&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using index for group-by&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블 접근에 대한 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using index&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;방식과 유사한 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using index for group-by&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;방식은&lt;SPAN lang=EN&gt;MySQL&lt;/SPAN&gt;이 실제 테이블을 추가적으로 검색을 하지 않고서도&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;GROUP BY&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;DISTINCT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;쿼리의 모든 컬럼을 추출 &lt;SPAN lang=EN&gt;(retrieve)&lt;/SPAN&gt;하기 위해 사용될 수 있는 인덱스를 찾았음을 가리킨다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;또한&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;그 인덱스는 각 그룹에 대해 가장 효과적인 방식으로 사용되기 때문에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;적은 수의 인덱스 엔트리만이 읽혀지게 된다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level2 lfo6; tab-stops: list 72.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using where with pushed condition&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 아이템은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;NDB Cluster&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블에만 적용된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이것은 &lt;SPAN lang=EN&gt;MySQL &lt;/SPAN&gt;클러스터가 인덱스가 되지 않은 컬럼 &lt;SPAN lang=EN&gt;(non-indexed column)&lt;/SPAN&gt;과 상수 &lt;SPAN lang=EN&gt;(constant) &lt;/SPAN&gt;간의 직접 비교 &lt;SPAN lang=EN&gt;(direct comparision (&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;=&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;))&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;의 효율성을 개선하기 위해서 조건문을 푸시 다운 &lt;SPAN lang=EN&gt;(condition pushdown) &lt;/SPAN&gt;하는 중이라는 의미를 갖는다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이와 같은 경우&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;조건문은 동시에 값이 검사되는 클러스터의 모든 데이터 노드로 &lt;SPAN lang=EN&gt;“&lt;/SPAN&gt;푸시 다운 &lt;SPAN lang=EN&gt;(&lt;SPAN class=quote&gt;pushed down)&lt;/SPAN&gt;” &lt;/SPAN&gt;된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이것은 매치되지 않는 열을 네트워크 전체에 보낼 필요성을 없애 주며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;조건문 푸시 다운을 하지 않는 경우에 비해서&lt;SPAN lang=EN&gt; 5 ~ 10&lt;/SPAN&gt;배의 속도 향상을 얻을 수가 있다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;여러분이 아래와 같은 클러스터 테이블을 가지고 있다고 가정하자&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;CREATE TABLE t1 (&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt; &lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;a INT, &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;b INT, &lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;KEY(a)&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;) ENGINE=NDBCLUSTER;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이와 같은 경우&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;조건문 푸시 다운은 아래와 같은 쿼리와 함께 사용될 수 있다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;SELECT a,b FROM t1 WHERE b = 10;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이것은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;EXPLAIN SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;결과를 통해서 볼 수가 있는데&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;그 결과는 다음과 같다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;mysql&amp;gt; &lt;STRONG&gt;&lt;SPAN style=&quot;FONT-WEIGHT: normal; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림체&quot;&gt;EXPLAIN SELECT a,b FROM t1 WHERE b = 10\G&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;*************************** 1. row ***************************&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;id: 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;select_type: SIMPLE&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;table: t1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;type: ALL&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;possible_keys: NULL&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;key: NULL&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;key_len: NULL&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ref: NULL&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;rows: 10&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;Extra: Using where with pushed condition&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조건문 푸시 다운은 다음의 쿼리와 함께 사용할 수 없다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;SELECT a,b FROM t1 WHERE a = 10;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;SELECT a,b FROM t1 WHERE b + 1 = 10;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-para-margin-left: 7.2gd&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;첫 번째 쿼리의 경우에는 조건문 푸시 다운을 적용할 수가 없는데&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;그 이유는 인덱스가 컬럼 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;a&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에 존재하기 때문이다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;두 번째 경우에 대해서 조건문 푸시 다운을 사용할 수 없는 이유는&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;인덱스가 되지 않은 컬럼 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;b&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 포함하는 비교문이 간접적이기 때문이다&lt;SPAN lang=EN&gt;. (&lt;/SPAN&gt;하지만&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;WHERE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;구문에서 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;b + 1 = 10&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;을 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;b = 9&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;로 줄여서 비교를 한다면 푸시 다운을 사용할 수가 있다&lt;SPAN lang=EN&gt;.) &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;하지만&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;또는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;&amp;lt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;연산자를 사용해서 인덱스된 컬럼을 상수&lt;SPAN lang=EN&gt;(constant)&lt;/SPAN&gt;와 비교를 하는 경우에는 조건문 푸시 다운을 사용할 수가 있다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;mysql&amp;gt; &lt;STRONG&gt;&lt;SPAN style=&quot;FONT-WEIGHT: normal; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림체&quot;&gt;EXPLAIN SELECT a,b FROM t1 WHERE a&amp;lt;2\G&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;*************************** 1. row ***************************&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;id: 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;select_type: SIMPLE&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;table: t1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;type: range&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;possible_keys: a&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;key: a&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;key_len: 5&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ref: NULL&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;rows: 2&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 72pt; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;Extra: Using where with pushed condition&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조건문 푸시 다운에 관련해서는 아래의 사항을 기억하기 바란다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;UL type=circle&gt;
&lt;UL type=square&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level3 lfo6; tab-stops: list 108.0pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조건문 푸시 다운은 &lt;SPAN lang=EN&gt;MySQL &lt;/SPAN&gt;클러스터에만 관련이 있으며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;다른 스토리지 엔진을 사용하고 있는 테이블에 대해서 쿼리를 실행할 경우에는 발생하지 않는다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l5 level3 lfo6; tab-stops: list 108.0pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조건문 푸시 다운 기능은 디폴트로 사용되지 않는다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이 기능을 활성화 시키기 위해서는&lt;/FONT&gt;&lt;SPAN lang=EN&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-WEIGHT: normal; COLOR: #990000; FONT-FAMILY: 굴림체&quot;&gt;mysqld&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/SPAN&gt;&lt;FONT color=#000000&gt;을 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;--engine-condition-pushdown&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;옵션과 함께 시작하거나&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;또는 아래의 명령문을 실행한다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/LI&gt;&lt;/UL&gt;&lt;/UL&gt;&lt;/UL&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; MARGIN-LEFT: 90pt; TEXT-INDENT: 18pt; TEXT-ALIGN: justify; mso-para-margin-left: 9.0gd; mso-char-indent-count: 2.0&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;SET engine_condition_pushdown=On;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt 72pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;조건문 푸시 다운&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;Using where with pushed condition&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;, &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;그리고 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;engine_condition_pushdown&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;등은 모두&lt;SPAN lang=EN&gt; 5.0 &lt;/SPAN&gt;클러스터에서 추가 되었다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;여러분은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;결과에 있는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;rows&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼 값을 사용하면 좋은 조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;을 얻는 방법을 알아 낼 수가 있다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이것은&lt;SPAN lang=EN&gt; MySQL&lt;/SPAN&gt;이 쿼리를 실행하기 위해서 조사해야 하는 열의 수가 얼마나 되는지 대략적으로 알려준다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;만일 여러분이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;max_join_size&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;시스템 변수를 사용해서 쿼리를 제한하면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이러한 열은 다중&lt;SPAN lang=EN&gt;-&lt;/SPAN&gt;테이블 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문을 실행해야 하는지 아니면 무시해야 하는지를 결정할 때 이 열 값을 사용할 수도 있다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;아래의 예제는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체 color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;에 의해 얻어진 정보를 가지고서 다중&lt;SPAN lang=EN&gt;-&lt;/SPAN&gt;테이블 조인을 어떻게 최적화 시키는 지를 설명하는 것이다&lt;SPAN lang=EN&gt;.&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;다음과 같은 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문을 가지고 있으며&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;을 사용해서 이것을 조사한다고 가정하자&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;EXPLAIN SELECT tt.TicketNumber, tt.TimeIn,&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.ProjectReference, tt.EstimatedShipDate,&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.ActualShipDate, tt.ClientID,&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.ServiceCodes, tt.RepetitiveID,&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.CurrentProcess, tt.CurrentDPPerson,&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.RecordVolume, tt.DPPrinted, et.COUNTRY,&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&lt;/SPAN&gt;et_1.COUNTRY, do.CUSTNAME&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;/SPAN&gt;&lt;SPAN lang=FR style=&quot;FONT-SIZE: 9pt; mso-ansi-language: FR&quot;&gt;FROM tt, et, et AS et_1, do&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN lang=FR style=&quot;FONT-SIZE: 9pt; mso-ansi-language: FR&quot;&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;/SPAN&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;WHERE tt.SubmitTime IS NULL&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;AND tt.ActualPC = et.EMPLOYID&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;AND tt.AssignedPC = et_1.EMPLOYID&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;AND tt.ClientID = do.CUSTNMBR;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;위 예제에 대해서&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;다음과 같은 가정을 하도록 하자&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l65 level1 lfo7; tab-stops: list 36.0pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;비교가 되는 컬럼은 아래와 같이 선언 되었다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;DIV&gt;
&lt;TABLE class=MsoNormalTable style=&quot;MARGIN: auto auto auto 36pt; mso-cellspacing: 1.5pt&quot; cellPadding=0 border=0&gt;
&lt;TBODY&gt;
&lt;TR style=&quot;mso-yfti-irow: 0; mso-yfti-firstrow: yes&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 37.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=50&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN class=bold&gt;&lt;B&gt;&lt;I&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #003333; FONT-FAMILY: 굴림체&quot;&gt;Table&lt;/SPAN&gt;&lt;/I&gt;&lt;/B&gt;&lt;/SPAN&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 70.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=94&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN class=bold&gt;&lt;B&gt;&lt;I&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #003333; FONT-FAMILY: 굴림체&quot;&gt;Column&lt;/SPAN&gt;&lt;/I&gt;&lt;/B&gt;&lt;/SPAN&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 87.75pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=117&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;SPAN class=bold&gt;&lt;B&gt;&lt;I&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; BACKGROUND: white; COLOR: #003333; FONT-FAMILY: 굴림체&quot;&gt;Data Type&lt;/SPAN&gt;&lt;/I&gt;&lt;/B&gt;&lt;/SPAN&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 1&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 37.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=50&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;Tt&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
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&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
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&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
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&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
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&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
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&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;CHAR(10)&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 3&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 37.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=50&gt;
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&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
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&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
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&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;CHAR(10)&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 4&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 37.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=50&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;Et&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
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&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;EMPLOYID&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
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&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;CHAR(15)&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
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&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 37.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=50&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;Do&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 70.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=94&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;CUSTNMBR&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 87.75pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=117&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;CHAR(15)&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;&lt;/TBODY&gt;&lt;/TABLE&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l65 level1 lfo7; tab-stops: list 36.0pt&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블은 아래와 같은 인덱스를 가지고 있다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;DIV&gt;
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&lt;TBODY&gt;
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&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 114.75pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=153&gt;
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&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 1&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 46.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=62&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;Tt&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 114.75pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=153&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;ActualPC&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 2&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 46.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=62&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;Tt&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 114.75pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=153&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;AssignedPC&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 3&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 46.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=62&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;Tt&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 114.75pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=153&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;ClientID&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 4&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 46.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=62&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;Et&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 114.75pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=153&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;EMPLOYID&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;(primary key)&lt;/SPAN&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;
&lt;TR style=&quot;mso-yfti-irow: 5; mso-yfti-lastrow: yes&quot;&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 46.5pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=62&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT color=#0e4075&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;Do&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;
&lt;TD style=&quot;BORDER-RIGHT: white 1.5pt outset; PADDING-RIGHT: 0.75pt; BORDER-TOP: white 1.5pt outset; PADDING-LEFT: 0.75pt; PADDING-BOTTOM: 0.75pt; BORDER-LEFT: white 1.5pt outset; WIDTH: 114.75pt; PADDING-TOP: 0.75pt; BORDER-BOTTOM: white 1.5pt outset; BACKGROUND-COLOR: transparent&quot; width=153&gt;
&lt;P class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt&quot;&gt;&lt;FONT color=#0e4075&gt;CUSTNMBR&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;FONT color=#000000&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체&quot;&gt;(primary key)&lt;/SPAN&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN-US style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림&quot;&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt; 
&lt;DIV&gt;&lt;/DIV&gt;&lt;/TD&gt;&lt;/TR&gt;&lt;/TBODY&gt;&lt;/TABLE&gt;&lt;/DIV&gt;
&lt;UL type=disc&gt;
&lt;LI class=MsoNormal style=&quot;MARGIN: 0cm 0cm 0pt; WORD-BREAK: keep-all; TEXT-AUTOSPACE: ideograph-numeric; mso-pagination: widow-orphan; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-list: l65 level1 lfo7; tab-stops: list 36.0pt&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tt.ActualPC&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값은 골고루 분산되지 않는다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/LI&gt;&lt;/UL&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;최적화가 실행되지 전에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문은 다음과 같은 정보를 생성한다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-INDENT: 54pt; TEXT-ALIGN: justify; mso-char-indent-count: 6.0&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;table type possible_keys key&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;key_len ref&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;rows&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;Extra&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-INDENT: 54pt; TEXT-ALIGN: justify; mso-char-indent-count: 6.0&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;et&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL 74&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-INDENT: 54pt; TEXT-ALIGN: justify; mso-char-indent-count: 6.0&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;do&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL 2135&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-INDENT: 54pt; TEXT-ALIGN: justify; mso-char-indent-count: 6.0&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;et_1&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL 74&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-INDENT: 54pt; TEXT-ALIGN: justify; mso-char-indent-count: 6.0&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;tt&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;AssignedPC,&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL 3872&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;ClientID,&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;ActualPC&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&lt;/SPAN&gt;range checked for each record (key map: 35)&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;type&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;은 모든 테이블에 대해 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ALL&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이기 때문에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이 결과 값은 &lt;SPAN lang=EN&gt;MySQL&lt;/SPAN&gt;이 모든 테이블에 대해서 하나의 카르테시안&lt;SPAN lang=EN&gt; (Cartesian) &lt;/SPAN&gt;값을 생성하는 중이라는 것을 가리킨다&lt;SPAN lang=EN&gt;; &lt;/SPAN&gt;즉&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;열에 대한 모든 조합&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이 과정은 각각의 테이블에 있는 열의 숫자를 조사해야 하기 때문에 시간이 오래 걸리게 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;위의 경우에는&lt;SPAN lang=EN&gt;, 74 × 2135 × 74 × 3872 = 45,268,558,720 &lt;/SPAN&gt;열이 된다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;만일 컬럼 상의 인덱스들을 동일한 타입과 크기로 선언할 경우에는&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;이 이를 효과적으로 처리하는데 한가지 문제가 생긴다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;위의 문장에서 보면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;VARCHAR&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;및 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;CHAR&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;의 크기를 동일하게 선언하면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;이것들은 동일한 것으로 간주가 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tt.ActualPC&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;CHAR(10)&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;로 선언 되었고 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;et.EMPLOYID&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;CHAR(15)&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;로 선언 되었기 때문에&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;길이가 맞지 않게 된다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼 길이 간의 이러한 문제를 해결 하기 위해서는&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ALTER TABLE&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;를 사용해서 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;ActualPC&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;의 길이를 &lt;SPAN lang=EN&gt;10 &lt;/SPAN&gt;개 문자에서&lt;SPAN lang=EN&gt; 15 &lt;/SPAN&gt;문자로 늘리도록 한다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;mysql&amp;gt; &lt;STRONG&gt;&lt;SPAN style=&quot;FONT-WEIGHT: normal; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림체&quot;&gt;ALTER TABLE tt MODIFY ActualPC VARCHAR(15);&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이제 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tt.ActualPC&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;및 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;et.EMPLOYID&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;는 모두 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;VARCHAR(15)&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;가 된다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문을 다시 실행하면 아래와 같은 결과를 얻게 된다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;table type&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;possible_keys key&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;key_len ref&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;rows&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;Extra&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;tt&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;AssignedPC,&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;3872&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;Using&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ClientID,&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;where&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ActualPC&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;do&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;2135&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;range checked for each record (key map: 1)&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;et_1&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;74&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;range checked for each record (key map: 1)&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;et&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;eq_ref PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;PRIMARY 15&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.ActualPC 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이 결과 값은 완벽하지는 않지만 많이 개선이 된 것이다&lt;SPAN lang=EN&gt;: &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;rows&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;값은 &lt;SPAN lang=EN&gt;74 &lt;/SPAN&gt;보다 작다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이와 같은 실행은 수초 정도 걸린다&lt;SPAN lang=EN&gt;. &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;두 번째 대안으로는&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tt.AssignedPC = et_1.EMPLOYID&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;와 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tt.ClientID = do.CUSTNMBR&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;비교에서 컬럼 길이가 일치하지 않는 것을 제거하는 것이다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;mysql&amp;gt; &lt;STRONG&gt;&lt;SPAN style=&quot;FONT-WEIGHT: normal; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림체&quot;&gt;ALTER TABLE tt MODIFY AssignedPC VARCHAR(15),&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체&gt;&lt;FONT color=#a1520f&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;-&amp;gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;FONT color=#a1520f&gt;&lt;STRONG&gt;&lt;SPAN style=&quot;FONT-WEIGHT: normal; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림체&quot;&gt;MODIFY ClientID&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;VARCHAR(15);&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이와 같이 수정을 하면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체 color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;은 다음과 같은 결과를 만들게 된다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;table type&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;possible_keys key&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;key_len ref&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;rows Extra&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;et&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;74&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;tt&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ref&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;AssignedPC,&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ActualPC 15&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;et.EMPLOYID&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&lt;/SPAN&gt;52&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;Using&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ClientID,&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;where&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ActualPC&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;et_1&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;eq_ref PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;15&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.AssignedPC 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;do&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;eq_ref PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;15&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.ClientID&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;이렇게 하고 나면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;쿼리는 거의 최적화가 이루어진다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;이제 남아 있는 문제는&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;이 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tt.ActualPC&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼에 있는 값들은 골고루 분포되어 있으나&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;tt&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;테이블에 대해서는 그렇지 않다고 가정하고 있다는 점이다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;다행스러운 것은&lt;SPAN lang=EN&gt;, MySQL&lt;/SPAN&gt;로 하여금 키 분포도를 분석하도록 만드는 것이 쉽다는 점이다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;mysql&amp;gt; &lt;STRONG&gt;&lt;SPAN style=&quot;FONT-WEIGHT: normal; FONT-FAMILY: 굴림체; mso-bidi-font-family: 굴림체&quot;&gt;ANALYZE TABLE tt;&lt;/SPAN&gt;&lt;/STRONG&gt;&lt;/FONT&gt;&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;
&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;추가적인 인덱스 정보를 사용하면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;조인 &lt;SPAN lang=EN&gt;(join)&lt;/SPAN&gt;은 완벽해 지고 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT face=굴림체 color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;은 아래와 같은 결과를 만들게 된다&lt;SPAN lang=EN&gt;: &lt;o:p&gt;&lt;/o:p&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;
&lt;DIV&gt;&lt;/DIV&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;table type&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;possible_keys key&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;key_len ref&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;rows Extra&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;tt&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ALL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;AssignedPC&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;NULL&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;3872 Using&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ClientID,&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;where&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;ActualPC&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;et&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;eq_ref PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;PRIMARY 15&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.ActualPC&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;et_1&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp; &lt;/SPAN&gt;eq_ref PRIMARY&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;PRIMARY 15&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp; &lt;/SPAN&gt;tt.AssignedPC 1&lt;o:p&gt;&lt;/o:p&gt;&lt;/FONT&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/PRE&gt;&lt;PRE style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#a1520f&gt;&lt;FONT face=굴림체&gt;do&lt;SPAN style=&quot;mso-spacerun: yes&quot;&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp; 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&lt;P style=&quot;TEXT-JUSTIFY: inter-ideograph; TEXT-ALIGN: justify&quot;&gt;&lt;FONT face=굴림체&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;EXPLAIN&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;결과에 있는&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT color=#0e4075&gt;&lt;CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt; &lt;/SPAN&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;rows&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;컬럼은&lt;SPAN lang=EN&gt; MySQL &lt;/SPAN&gt;조인 &lt;SPAN lang=EN&gt;(join) &lt;/SPAN&gt;최적화를 통해서 개선된다는 점을 알아두자&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;rows&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;가 만들어 내는 값과 쿼리가 리턴하는 열의 실제 숫자를 비교함으로써 그 숫자가 거의 일치하는지를 검사해야 한다&lt;SPAN lang=EN&gt;. &lt;/SPAN&gt;만일 그 숫자가 많이 차이가 난다면&lt;SPAN lang=EN&gt;, &lt;/SPAN&gt;&lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;SELECT&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;명령문에서&lt;/FONT&gt;&lt;/SPAN&gt;&lt;FONT color=#0e4075&gt;&lt;CODE&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt; &lt;/SPAN&gt;&lt;/CODE&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;STRAIGHT_JOIN&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;을 사용하고 &lt;/FONT&gt;&lt;/SPAN&gt;&lt;CODE&gt;&lt;B style=&quot;mso-bidi-font-weight: normal&quot;&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#0e4075&gt;FROM&lt;/FONT&gt;&lt;/SPAN&gt;&lt;/B&gt;&lt;/CODE&gt;&lt;SPAN lang=EN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt; &lt;/FONT&gt;&lt;/SPAN&gt;&lt;/FONT&gt;&lt;SPAN style=&quot;FONT-SIZE: 9pt; FONT-FAMILY: 굴림체; mso-ansi-language: EN&quot;&gt;&lt;FONT color=#000000&gt;구문에서 테이블 순서를 다르게 하면 보다 나은 성능을 얻을 수가 있을 것이다&lt;SPAN lang=EN&gt;. &lt;A name=estimating-performance&gt;&lt;/A&gt;&lt;br /&gt;
&lt;/P&gt;
&lt;P&gt;&lt;o:p&gt;&lt;/o:p&gt;&amp;nbsp;&lt;/P&gt;
&lt;P&gt;&lt;o:p&gt;출처: &lt;A href=&quot;http://www.mysqlkorea.co.kr/sub.html?mcode=manual&amp;amp;scode=01&amp;amp;m_no=21444&amp;amp;cat1=7&amp;amp;cat2=217&amp;amp;cat3=227&amp;amp;lang=k&quot;&gt;http://www.mysqlkorea.co.kr/sub.html?mcode=manual&amp;amp;scode=01&amp;amp;m_no=21444&amp;amp;cat1=7&amp;amp;cat2=217&amp;amp;cat3=227&amp;amp;lang=k&lt;/A&gt;&lt;/o:p&gt;&lt;/P&gt;
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			<category>mysql</category>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/447</guid>
			<comments>http://misojium.com/447#entry447comment</comments>
			<pubDate>Wed, 11 Aug 2010 09:56:45 +0900</pubDate>
		</item>
		<item>
			<title>숨쉬기가 답답할 때. 호흡이 답답한 증상</title>
			<link>http://misojium.com/446</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
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			&lt;!-- &lt;rdf:RDF xmlns=&quot;http://web.resource.org/cc/&quot; xmlns:dc=&quot;http://purl.org/dc/elements/1.1/&quot; xmlns:rdf=&quot;http://www.w3.org/1999/02/22-rdf-syntax-ns#&quot;&gt;
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			&lt;requires rdf:resource=&quot;http://web.resource.org/cc/ShareAlike&quot;/&gt;&lt;prohibits rdf:resource=&quot;http://web.resource.org/cc/CommercialUse&quot;/&gt;&lt;/License&gt;&lt;/rdf:RDF&gt; --&gt;&lt;/div&gt;&lt;/fieldset&gt;&lt;span class=&quot;Apple-style-span&quot; style=&quot;color: rgb(21, 21, 21); &quot;&gt;&lt;h1 style=&quot;margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; font-family: 굴림, sans-serif; font-size: 10px; line-height: 14px; font: normal normal normal 0.96em/1.3 &#039;dotum times&#039;; color: rgb(61, 61, 61); &quot;&gt;&lt;span class=&quot;Apple-style-span&quot; style=&quot;color: rgb(21, 21, 21); font-family: 굴림; line-height: 24px; font-size: 16px; &quot;&gt;기관지가 안 좋은 분들에게 잘 나타나는 증상인데요.&amp;nbsp;&lt;/span&gt;&lt;/h1&gt;&lt;p align=&quot;justify&quot; style=&quot;line-height: 24px; &quot;&gt;&lt;span style=&quot;font-size: 12pt; &quot;&gt;감기나 기침도 없고 다른 아무런 증상도 없는데 이상하게 호흡이 안편한 경우가 있습니다.&lt;br /&gt;
특히 잠을 잘 때 안 편하지요. 그렇게 되면 코를 안 골던 사람도 코를 콜 게 됩니다. 답답하니까 푸우~하고 입으로 숨을 내 쉬는 잠을 자게 되는 것입니다. 어떤 분들은 가슴에 살이 찌면 그러더라 말하는 분들도 있습니다.&amp;nbsp;&lt;br /&gt;
특히 운동을 많이 한 날이나 술을 먹은 날 심해 집니다.&lt;br /&gt;
&lt;/span&gt;&lt;br /&gt;
&lt;/p&gt;&lt;p align=&quot;justify&quot; style=&quot;line-height: 24px; &quot;&gt;&lt;span style=&quot;font-size: 12pt; &quot;&gt;그러나 근본 치료는 차고 더움을 관찰하고 생활을 조절해야만 치료가 됩니다.&lt;br /&gt;
방치를 하게 되면 점점 심해져서 평소에도 숨이 잘 안 쉬어지는 상태로 가게 되고 더 심해지면 호흡부전이 되기도 합니다.&lt;/span&gt;&lt;br /&gt;
&lt;br /&gt;&lt;/p&gt;
&lt;p align=&quot;justify&quot; style=&quot;line-height: 24px; &quot;&gt;&lt;span style=&quot;font-size: 12pt; &quot;&gt;목 아래로 두 번째 부분의 뼈를 눌러보면 아플 것입니다.&lt;br /&gt;
실내 온도가 차가워지면 가슴 부위가 차가워지면서 그런 증상을 느끼는 경우와 가슴에 열이 많아지면서 그런 증상을 느끼는 두 종류가 있게 됩니다.&lt;br /&gt;
자신의 증상이 어느 쪽인가를 먼저 판단해야만 합니다.&lt;br /&gt;
&lt;/span&gt;&lt;br /&gt;
&lt;/p&gt;&lt;p align=&quot;justify&quot; style=&quot;line-height: 24px; &quot;&gt;&lt;span style=&quot;font-size: 12pt; &quot;&gt;쉽게 판단을 하는 방법이 있습니다.&lt;br /&gt;
며칠 간 방안이 좀 춥고 옷을 많이 입고 지내지 않았다면, 일단 두꺼운 옷을 입고 몸을 덥게 해 봅니다. 그렇게 30분간 있어 봅니다.&amp;nbsp;&lt;br /&gt;
이 때 상태가 약간 호전이 되거나 감각이 좋아지면,&amp;nbsp;&quot;아, 그동안 몸이 차가웠구나 판단하고 방안의 온도도 올리고 음식도 열량이 많고 따뜻한 음식 위주로 먹어야합니다.&amp;nbsp;&lt;br /&gt;
절대 냉성의 음식은 멀리해야 하며 과일이나 채식은 안하는 것이 좋습니다.&lt;br /&gt;
그렇게 3일간만 하세요.&lt;br /&gt;
약을 쓴다면 비타민 E를 이 때 먹는 것입니다.&lt;br /&gt;
그러면 좋아집니다. 좋아지고 나서는&amp;nbsp;방안의 온도를 너무 높지 않게&amp;nbsp;약간 조절하세요.&amp;nbsp;&lt;br /&gt;
&lt;br /&gt;반대로 두꺼운 옷을 입고 몸을 덥게 하는데&amp;nbsp;더 감각이 안 좋아지고 상태가 이상하다. 싶으면, &quot;아차&amp;nbsp;몸을 덥게 하면 안되는 구나.&quot; 판단하고 옷을 모두 시원하게 입고 방안의 온도를 팍 내리고 음식도 모두 시원한 음식 위주로 먹습니다.&lt;br /&gt;
과일도 먹고 채식을 좀 합니다. 도라지도 이 때 먹는 것입니다.&lt;br /&gt;
위와 같이&amp;nbsp;3일&amp;nbsp;정도 하면 대부분 좋아집니다. 3일이 넘고 나면 방안의 온도를 다시 중립으로 잘 조절하세요.&lt;br /&gt;
&lt;/span&gt;&lt;br /&gt;
&lt;/p&gt;&lt;p align=&quot;justify&quot; style=&quot;line-height: 24px; &quot;&gt;&lt;span style=&quot;font-size: 12pt; &quot;&gt;(몸이 차가우면서 숨이 답답할 때는, 술을 드셔도&amp;nbsp;맥주나 매실주를 먹게 되면 잠을 자면서 상태가 더욱 안 좋아지면서 코를 골게 되는 것입니다.&lt;br /&gt;
이 때는 실내 온도를 올리고 옷을 더 입으며 인삼을 먹고 비타민 E를 먹어서 보온이 되게 하면 자연스럽게 해소가 되게 됩니다.)&lt;br /&gt;
&lt;br /&gt;그러나 반대로 열이 많으면서 그럴 때는 상체의 옷을 시원하게 입고 실내 온도를 며칠간만 내리고 도라지나 백년초 열매를 복용 해 주면 다시 좋아집니다.&amp;nbsp;&lt;br /&gt;
&lt;br /&gt;백년초 열매는 기침이 나고 가래가 나올 때까지 복용하고 가래가 나오기 시작하고 3일 정도 지나면 복용을 중지해야 합니다.&amp;nbsp;&lt;br /&gt;
열매의 가시들을 잘 긁어 제거하고 네쪽으로 나누어서 그대로 오물오물 씹어서 씨는 씹지말고 그냥&amp;nbsp;함께 삼킵니다.&lt;br /&gt;
먹기가 사나우면 열매를&amp;nbsp;쪼개서 그 분량과 같은 설탕으로 제어서 냉장고에 넣어두고 드시면 됩니다.&lt;br /&gt;
이 때 별도의 물은 섞지 마세요.&lt;br /&gt;
그리고 백년초열매를 복용할 때 너무 심하게 기침이 난다면 가슴부위를 특별하게 보온하고 몸을 따뜻하게 하세요 그러면 기침은 멈추고 가래만 배출이 됩니다.&lt;br /&gt;
&lt;br /&gt;일반적으로 기관지 쪽에 염증이 있고 가래가 덥고 있다면 반드시 모두 배출이 되어야합니다.&lt;br /&gt;
그러나 염증이 아직있는 관계로 배출을 해도 계속 도로 가래가 낍니다. 그렇기 때문에 계속 가래 배출이 이루어지면서 염증이 소멸되어 가야&amp;nbsp;합니다.&lt;br /&gt;
마지막에는 가래가 안 나오게 되는데 그 때가 완치 된 것입니다.&lt;br /&gt;
그 과정 중에 기침이 심하다 싶으면 반드시 보온을 해서 몸을 따뜻하게 조절하면서 그 과정을 완수해야 합니다.&lt;br /&gt;
백년초 열매를 복용하는 과정에 다른 부작용이 있다면 5일 정도 복용하고 7주일을 쉬고&amp;nbsp;&amp;nbsp;&amp;nbsp;다시 복욕하며 그렇지 않다면 가래가 완전하게 멈출 때까지 복용하면 됩니다.&lt;br /&gt;
그리고 가슴 부위에 열이 많다고 판단이 된다면 (다른 곳보다 피부색깔이 붉거나 하면 열이 많다고 보면 된다. 또 잘 모르겠으면 차가운 물건과 따듯한 물건을 두가지 준비를 하고 각각 가슴 복판에 대 본다. 환부가 어느 쪽을 대니 감각이 편해지는 지를 보고 그 쪽을 선택하면 된다.)백년초 열매를 복용하면서 더불어서 가슴 복판 외부에 지속적으로 차가운 걸 대서 열을 뺀다 그러면 신속하게 회복이 된다.&lt;br /&gt;
그러다가 만약 기침이 심해지면 중지하고 따뜻하게 조치를 해야한다.&amp;nbsp;&lt;br /&gt;
&amp;nbsp;&lt;br /&gt;
&lt;br /&gt;가슴 부위가 찬지 더운지를 모른다면 두꺼운 옷을 입고 시험을 하셔야 합니다.&amp;nbsp;&lt;br /&gt;
두터운 옷을 입었을 때 숨이 편해진다면&amp;nbsp;몸이 춥워서 숨이차고 가슴이&amp;nbsp;답답해진 것이므로 몸을 따뜻하게 조치를 한다는 것입니다.&lt;br /&gt;
그리고 두꺼운 옷을 입었을 때 좋아지기는 커녕,&amp;nbsp;더욱 답답해진다면 현재 몸의 열이 많아서 숨이 차고 가슴이 답답한 것입니다.&amp;nbsp;&lt;/span&gt;&lt;br /&gt;
&lt;span style=&quot;font-size: 12pt; &quot;&gt;평소에 안 그렇다가 그런 현상이 자주 나타난다면&amp;nbsp;주의를&amp;nbsp;하세요.&lt;br /&gt;
대체로 나이가 들어가면서 그런 증상이 없던 사람도 나타납니다.&lt;br /&gt;
&lt;br /&gt;운동도 좀 해주세요. 적절한 운동이 뭐냐고요?&lt;br /&gt;
상체 운동은 부드럽게 천천히 마치 자유형 수영하는 듯한 동작을 해 주면 숨이 편해지면서 밤에 답답한 호흡을 하지 않게 될 것입니다.&amp;nbsp;&lt;br /&gt;
반드시 담배를 끊어야 하고요.&amp;nbsp;&lt;br /&gt;
계속 방치하면 점차 심해지니까 조심을 하세요.&lt;/span&gt;&lt;br /&gt;
&lt;/p&gt;&lt;div&gt;
&lt;span style=&quot;font-size: 12pt; &quot;&gt;&lt;br /&gt;
&lt;/span&gt;&lt;/div&gt;
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</description>
			<category>이것저것</category>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/446</guid>
			<comments>http://misojium.com/446#entry446comment</comments>
			<pubDate>Wed, 28 Jul 2010 20:57:03 +0900</pubDate>
		</item>
		<item>
			<title>2010년 남아공 월드컵 일정표 (1400x1050)</title>
			<link>http://misojium.com/443</link>
			<description>&lt;fieldset style=&quot;margin:20px 0px 20px 0px;padding:5px;&quot;&gt;&lt;legend&gt;&lt;span&gt;&lt;strong&gt;크리에이티브 커먼즈 라이선스&lt;/strong&gt;&lt;/span&gt;&lt;/legend&gt;&lt;!--Creative Commons License--&gt;&lt;div style=&quot;float: left; width: 88px; margin-top: 3px;&quot;&gt;&lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;&lt;img alt=&quot;Creative Commons License&quot; style=&quot;border-width: 0&quot; src=&quot;http://i.creativecommons.org/l/by-nc-sa/2.0/kr/88x31.png&quot;/&gt;&lt;/a&gt;&lt;/div&gt;&lt;div style=&quot;margin-left: 92px; margin-top: 3px; text-align: justify;&quot;&gt;이 저작물은 &lt;a rel=&quot;license&quot; href=&quot;http://creativecommons.org/licenses/by-nc-sa/2.0/kr/&quot; target=&quot;_blank&quot;&gt;크리에이티브 커먼즈 코리아 저작자표시-비영리-동일조건변경허락 2.0 대한민국 라이선스&lt;/a&gt;에 따라 이용하실 수 있습니다.
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남아공 일정표 입니당..&lt;/div&gt;
&lt;div&gt;
&lt;br /&gt;
&lt;/div&gt;
&lt;div&gt;
바탕화면으로 깔아놓고 주요경기를 보는 센쓰... ㅋㅋ&amp;nbsp;&lt;/div&gt;
&lt;div&gt;
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</description>
			<category>사는 이야기</category>
			<category>2010남아공월드컵</category>
			<category>바탕화면</category>
			<category>일정표</category>
			<category>주요경기</category>
			<author>예진이네집 괴스트</author>
			<guid>http://misojium.com/443</guid>
			<comments>http://misojium.com/443#entry443comment</comments>
			<pubDate>Mon, 14 Jun 2010 16:57:10 +0900</pubDate>
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