按某几列删除表中重复数据

来源：未知责任编辑：责任编辑发表时间:2015-01-01 13:18　点击:次

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)