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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