数据库知识点记录
- WBOYOriginal
- 2016-06-07 15:30:241137browse
A join B 结果是交集 A left join B 结果的条数是A的条数 full out join 并集 具体见： http://cms.csdnimg.cn/article/201409/29/5428ad03c3fd6.jpg mysql常用命令 http://www.chinaz.com/program/2009/0115/62526.shtml mysql -uroot -paaaaaa -h192.168.0
A join B 结果是交集
A left join B 结果的条数是A的条数
full out join 并集
具体见：
http://cms.csdnimg.cn/article/201409/29/5428ad03c3fd6.jpg
mysql常用命令
http://www.chinaz.com/program/2009/0115/62526.shtml
mysql -uroot -paaaaaa -h192.168.0.110
grep命令
http://www.cnblogs.com/ggjucheng/archive/2013/01/13/2856896.html
mysql简单练习题
http://blog.sina.com.cn/s/blog_767d65530101861c.html
Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：自考《数据库原理》之导图总结Next article：Nested & Access modifiers