查询和删除表中重复数据sql语句
1、查询表中重复数据。select * from people where peopleId in (select peopleId from people group ...
原文：sql语句查询表中重复数据（多类型）
表名：hztj 字段名：edxzqhdm ,sdxzqhdm .查出某一列数据中重复的，以sdxzqhdm为例 select from hztj a where a.sdxzqhdm in select sdxzqhdm from hztj group by sdxzqhdm having count gt .查询出所有数据进行分组之后，和重复数据的重复次数的查询数据 select count s ...
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