随笔分类 -  DB

database
3NF(Canonical Cover and Decomposition)
摘要：http://blog.csdn.net/scauscnu/article/details/6121471 阅读全文
posted @ 2015-11-23 16:41 dominjune 阅读(234) 评论(0) 推荐(0)
SQL: group by + having
摘要：http://www.cnblogs.com/rainman/archive/2013/05/01/3053703.html 阅读全文
posted @ 2015-11-22 12:12 dominjune 阅读(149) 评论(0) 推荐(0)