set ANSI_NULLS ON set QUOTED_IDENTIFIER ON GO drop proc proc_remove_same_stu go create proc proc_remove_same_stu as begin declare @stuid varchar(500) declare @stuNum int declare stuid_cursor cursor for select stuid from student_graduate group by stuid having count(stuid)>=2 open stuid_cursor fetch next from stuid_cursor into @stuid while @@fetch_status = 0 begin select @stuNum=count(1) from student_graduate where stuid=@stuid if @stuNum>1 begin exec('delete from student_graduate where byid=(select top 1 byid from student_graduate where stuid='''+@stuid+''')') end fetch next from stuid_cursor into @stuid end close stuid_cursor deallocate stuid_cursor end go exec proc_remove_same_stu go
sql server 2005 存储过程
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