79814662

Date: 2025-11-09 07:55:07
Score: 2.5
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select a, b, c, sum(diffCnt) from

(select a, b, c, 1 as diffCnt from T1 union all select a, b, c, -1 as diffCnt from T2 ) tmpt

group by a, b, c having sum(diffCnt) <> 0

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Posted by: Feng Tian