×

Loading...

要是T-SQL就太容易了: "select T1.A,T1.B from T T1 join T T2 ON T1.A=T2.A anf T1.B <> T2.B Group By T1.A,T1.B"

benbendan (笨笨蛋)
(#266310@0)
2001-11-18 -04:00
This post has been archived. It cannot be replied.
Page address has been copied. To share, click to copy page address.
Share Online by QR Code

Back To Topic: 闲来无事, 出道ORACLE SQL的题考考大家. 这是在下几个月前工作中遇到的问题, 看似简单, 其实不然.

Back To Forum: HOME枫下论坛枫下论坛主坛工作学习IT技术讨论