锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#20122;&#27954;&#65;&#86;&#25104;&#20154;&#29255;&#33394;&#22312;&#32447;&#35266;&#30475;&#39640;&#28526;&#13;&#44;&#33394;&#23159;&#23159;&#20122;&#27954;&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#44;&#20122;&#27954;&#19968;&#21306;&#26080;&#30721;&#31934;&#21697;&#33394;</title><link>http://m.tkk7.com/xichengmylove/category/28751.html</link><description>SOA銆丏ataStage銆乁nix銆丣ava EE銆丱racle銆丏ata Migration銆丏ata Integration</description><language>zh-cn</language><lastBuildDate>Tue, 08 Jan 2008 04:09:17 GMT</lastBuildDate><pubDate>Tue, 08 Jan 2008 04:09:17 GMT</pubDate><ttl>60</ttl><item><title>鍒犻櫎閲嶅鏁版嵁鐨?縐嶆柟娉?/title><link>http://m.tkk7.com/xichengmylove/archive/2008/01/08/173544.html</link><dc:creator>緹界考娓愪赴</dc:creator><author>緹界考娓愪赴</author><pubDate>Tue, 08 Jan 2008 02:04:00 GMT</pubDate><guid>http://m.tkk7.com/xichengmylove/archive/2008/01/08/173544.html</guid><wfw:comment>http://m.tkk7.com/xichengmylove/comments/173544.html</wfw:comment><comments>http://m.tkk7.com/xichengmylove/archive/2008/01/08/173544.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://m.tkk7.com/xichengmylove/comments/commentRss/173544.html</wfw:commentRss><trackback:ping>http://m.tkk7.com/xichengmylove/services/trackbacks/173544.html</trackback:ping><description><![CDATA[<p>浠婂ぉgoogle鍒嗘瀽鍑芥暟row_number()鐨勬椂鍊欏彂鐜扮殑錛岃寰楀緢濂斤細<br />
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鏂規硶涓�錛歞elete from demo a where a.rowid &lt;&gt; (select max(rowid) from demo b where<br style="font-family: " />
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鏂規硶浜岋細 delete from demo where rowid in <br style="font-family: " />
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鏂規硶涓夛細 create table demo2 as <br style="font-family: " />
select object_id,owner... from<br style="font-family: " />
(select demo.*,row_number() over(partition by object_id order by rowid) rn from demo)<br style="font-family: " />
where rn = 1;<br style="font-family: " />
truncate table demo; insert into demo select * from demo2; drop table demo2;<br style="font-family: " />
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瀛﹀埌浜嗗垎鏋愬嚱鏁皉ow_number(),瀵逛簬object_id鍜宺owid涔熸湁浜嗕竴浜涜璇嗐�俹racle瑕佸鐨勪笢瑗垮お澶氫簡錛屼粈涔堟椂鍊欐槸涓ご鍟?img alt="" src="/CuteSoft_Client/CuteEditor/images/emteeth.gif" align="absMiddle" border="0" />銆備笂闈㈢殑鏂規硶涓嶆槸寰堥毦鐞嗚В錛屼絾涔熻繕娌℃湁瀹屽叏鐞嗚В錛屾湁鏈轟細瀹為檯璇曡瘯銆?/p>
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