使用游标实现 代码如下:
declare @id1 int,@oldid int,@e_REcordid int ,@Olde_REcordid int DECLARE price CURSOR
FOR SELECT id ,E_recordId FROM evaeve order by E_recordId desc OPEN price
FETCH NEXT FROM price into @oldid,@Olde_REcordid while @@fetch_status = 0 begin
FETCH NEXT FROM price into @id1,@e_REcordid
if @Olde_REcordid=@e_REcordid BEGIN
delete from evaeve where id=@id1 end
set @oldid=@id1
set @Olde_REcordid=@e_REcordid end close price
DEALLOCATE price 使用sql语句实现 代码如下:
delete from evaeve where id not in( select max(id) from evaeve group by E_RecordID)
更多信息请查看IT技术专栏