oracle里not exists和not in 性能测试_sailorhu的记事本
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2008-07-16 15:28 http://hi.baidu.com/sailorhu/blog
今天针对oracle里面not in 和not exists专门做了个性能测试:
条件:oracle10g,表A 有记录数3243条,表B有记录数943条。
测试工具:Yourkit 6.0 。
测试sql如下
select * from A where not exists ( select * from B where A.id = B.id )和
select * from A where A.id not in ( select * from B)
not exists 的结果如下图:执行了 193 ms
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