MySQL去重
摘要:找出重复记录 SELECT *FROM unitednations_yearly_world aWHERE (a.cmdCode,a.rtCode,a.NetWeight,a.TradeValue,a.ptCode,a.rgCode) IN ( SELECT cmdCode,rtCode,NetWe
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posted @ 2019-01-17 11:28
posted @ 2019-01-17 11:28
posted @ 2018-11-29 13:25
posted @ 2018-11-27 10:05