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sqlserver_delete from from inner join_通过表关联查询删除
直接上SQL语句： DELETE FROM TJ_TB_Order FROM dbo.TJ_TB_Order O INNER JOIN (SELECT * FROM ( SELECT OriginID,OriginSiteID,COUNT(1) c,MAX(ID) ID FROM TJ_TB_Order GROUP BY OriginID,OriginSiteID ) A WHERE A.c>1) B ON O.OriginID=B.OriginID AND O.OriginSite