group by 多个字段
摘要：
insert into test values(1,'a','甲')insert into test values(1,'a','甲')insert into test values(1,'a','甲')insert into test values(1,'a','甲')insert into te... 阅读全文
posted @ 2013-06-06 21:26 Knuth_档案 阅读(216) 评论(0) 推荐(0) 编辑
