sql="select * from [A] order by Aid desc"

sql="select * from [A] where BID=“&BID&”order by Aid desc"

sql="select * from [A] where CID=“&CID&”order by Aid desc"

访问index.asp

就读出全部记录

当访问 index.asp?BID=BID

就读出 BID 的记录

当访问 index.asp?BID=BID&CID=CID 就读出 CID的记录啊