2016年4月14日
oracle SQL
摘要： 1:级联查询子树 SELECT code FROM students where valid_flag = 1 START WITH id IN (select t.id from students t where t.valid_flag = 1 AND t.code IN ('370100', 阅读全文
posted @ 2016-04-14 09:57 letmedown 阅读(163) 评论(0) 推荐(0)