按某几列删除表中重复数据

按某几列删除表中重复数据

 

开始获取了重复列的数据，想了好久不知道怎么在那基础上删除，最后仔细一想，通过下面那个sql多执行几次知道执行结果为0就表示重复数据已经删除了撒

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delete from warehouse_summary t where t.summary_id in (

select min(t.summary_id) 

  from warehouse_summary t

  left join warehouse_Info wi

    on t.warehouse_id = wi.warehouseid

 where 

    t.status = 1 group by wi.warehouseid,t.product_id having count(*)>1  

)

delete from people

where peopleId in (select peopleId from people group by peopleId   

having count(peopleId) > 1)

and rowid not in (select min(rowid) from people group by peopleId having count(peopleId )>1)