acmefu123的博客

declare @max integer,@id integerdeclare cur_rows cursor local for select id,count(*) from 表名 group by id having count(*) > 1open cur_rowsfetch cur_rows into @id,@maxwhile @@fetch_status=0beginselect @max = @max -1set rowcount @maxdelete from 表名 where id = @idfetch cur_rows into @id,@maxendclose cur_rowsset rowcount 0