https://www.xifenfei.com/2011/12/inexists%e5%92%8cnot-innot-exists%e6%89%a7%e8%a1%8c%e6%95%88%e7%8e%87.html 提供7*24专业数据库(Oracle,SQL Server,MySQL,PostgreSQL等)恢复和技术支持@Tel:17813235971 Thu, 11 Dec 2025 02:46:14 +0000 hourly 1 https://www.xifenfei.com/2011/12/inexists%e5%92%8cnot-innot-exists%e6%89%a7%e8%a1%8c%e6%95%88%e7%8e%87.html/comment-page-1#comment-1282 Thu, 28 Feb 2013 01:51:27 +0000 https://www.xifenfei.com/?p=2176#comment-1282 只要过程和结果所耗时间能让各方接受，用哪个都可以

]]> https://www.xifenfei.com/2011/12/inexists%e5%92%8cnot-innot-exists%e6%89%a7%e8%a1%8c%e6%95%88%e7%8e%87.html/comment-page-1#comment-335 Fri, 16 Dec 2011 12:42:19 +0000 https://www.xifenfei.com/?p=2176#comment-335 总结的很好哈，不过感觉有点太果断了，in和exist会互相转换的，个人理解in和exist这块还要看是否进行unnest，然后进行unnest之后连接方式是否正确

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