工做中經常使用mysql語句

梅舉字段重複個數blog SELECT gid,COUNT(0) from im_pull_group_sync GROUP  BY gidtable 查詢字段有重複的項class select nickname,count(*) as count from im_user group by nickname having count>’1‘   （1是兩個重複，，2是有3個重複）select 查

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