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select T.A, T.B from T join (select A,count(B) CNT from T group by A Having count(B) > 1 ) Z on T.A = Z.A

(#261202@0)
2001-11-14 -04:00
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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.

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