oracle 别名select * from (select * from(select * from table1 where col1(select max (col1) from tab
oracle 别名 select * from (select * from (select * from table1 where col1=(select max (col1) from table1 ) ) as a where col2 =(select max (col2) from a )) as b where col3 =(select max(col3) from b ) 为什么里面的别名失效呢？ [解决办法] 你分层搞清楚啊 [解决办法] 只有外层能用相邻内层的别名。
