内容发布更新时间 : 2024/5/6 11:02:42星期一 下面是文章的全部内容请认真阅读。

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)

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