回复：是这样的

来源: 于 2004-01-13 08:35:00 [旧帖] [给我悄悄话] 本文已被阅读：次

Row_Num is supported in Oracle. But most advanced RDBMS no longer support such feature to user. They still existing internally, but we can not retrieve them.

Some times, the pseudo-column, as my last post, is needed to add such feature to application.



--文学城www.wenxuecity.com--