Sql删除重复数据
update a set DelFlag=1 from Mall_ShopAcitivityGoods a
inner join (
select SAG_GbpvID gbpvid,max(sag_id) id from Mall_ShopAcitivityGoods where SAG_ActivityID='20f2664e-4575-462a-93dd-f7b9eb5afade' and DelFlag=0 group by SAG_GbpvID
) b
on SAG_GbpvID=gbpvid and SAG_ID<>id where SAG_ActivityID='20f2664e-4575-462a-93dd-f7b9eb5afade' and DelFlag=0
posted on 2019-09-26 10:53 sishuiruoshan 阅读(188) 评论(0) 编辑 收藏 举报
