G
greengao
Unregistered / Unconfirmed
GUEST, unregistred user!
sql语句
select a.id as aid,b.id as bid,aid+bid as cid
from a,b where a.id =b.id
提示错误
无效的列名 aid
无效的列名 bid
select a.id as aid,b.id as bid,aid+bid as cid
from a,b where a.id =b.id
提示错误
无效的列名 aid
无效的列名 bid