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	<title>评论：REPLACE INTO 为什么返回&#8221;2 rows affected&#8221;</title>
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	<description>一米六二，绝不转载</description>
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		<title>由：游客</title>
		<link>http://www.162cm.com/archives/909.html/comment-page-1#comment-890</link>
		<dc:creator>游客</dc:creator>
		<pubDate>Tue, 30 Jun 2009 16:03:02 +0000</pubDate>
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		<description>如果该primary key 或unique key的记录存在，是先删再插入。否则就是仅有插入。
换句话说,replace into ... values ...语句执行后,affected rows 要么是1 要么是2.</description>
		<content:encoded><![CDATA[<p>如果该primary key 或unique key的记录存在，是先删再插入。否则就是仅有插入。<br />
换句话说,replace into &#8230; values &#8230;语句执行后,affected rows 要么是1 要么是2.</p>
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		<title>由：小和尚</title>
		<link>http://www.162cm.com/archives/909.html/comment-page-1#comment-889</link>
		<dc:creator>小和尚</dc:creator>
		<pubDate>Tue, 30 Jun 2009 15:54:31 +0000</pubDate>
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		<description>replace =&gt; first delete ,then insert ?</description>
		<content:encoded><![CDATA[<p>replace =&gt; first delete ,then insert ?</p>
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