查詢和刪除表中重復數據sql語句
1、查詢表中重復數據。select * from people where peopleId in (select peopleId from people group ...
原文：sql語句查詢表中重復數據（多類型）
表名：hztj 字段名：edxzqhdm ,sdxzqhdm .查出某一列數據中重復的，以sdxzqhdm為例 select from hztj a where a.sdxzqhdm in select sdxzqhdm from hztj group by sdxzqhdm having count gt .查詢出所有數據進行分組之后，和重復數據的重復次數的查詢數據 select count s ...
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