053-381

Which pseudocolumn could you use to identify a unique row in a Flashback Versions Query?
A. XID
B. VERSIONS_PK
C. VERSIONS_XID
D. VERSIONS_UNIQUE

posted @ 2017-11-13 15:29  巴啦啦大魔王  阅读(80)  评论(0)  编辑  收藏  举报