摘要: http://blog.sina.com.cn/s/blog_6a01140c0100wimi.html1、从表中随机取记录select * from (select * from staff order by dbms_random.random)where rownum < 4表示从STAFF表... 阅读全文
posted @ 2015-04-22 09:14 一切随缘吧 阅读(363) 评论(0) 推荐(0) 编辑