sql2000数据库清除重复数据的二种方法

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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