06 2016 档案

查询两张表中不相同的数据
摘要：1 SELECT 2 c.userId, 3 c.userName 4 FROM 5 (SELECT 6 * 7 FROM 8 a 9 UNION 10 SELECT 11 * 12 FROM 13 b) c 14 WHERE c.userId NOT IN 15 (SELECT 16 b.`use 阅读全文
posted @ 2016-06-15 10:23 lhm_java 阅读(287) 评论(0) 推荐(0)