mysql三
2016-04-15 00:05
369 查看
修改字段名
mysql> alter table users change id user_id INT UNSIGNED AUTO_INCREMENT;
修改字段类型
mysql> alter table users change user_id user_id INT UNSIGNED AUTO_INCREMENT;
HAVING
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160416220518035-1589059936.png)
汇总函数
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160416220528863-1709259250.png)
WITH ROLLUP
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160416220720738-1720139901.png)
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160416220751910-931372549.png)
多个数据表的查询
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160419084808476-345230796.png)
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160419085316195-584496595.png)
LEFT JOIN
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160420083725507-1893104990.png)
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160420084959413-1403320135.png)
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160420085008585-1084107856.png)
子语句
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160420194729507-509388771.png)
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160420194912945-582824978.png)
DELETE
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160421085520991-1392738604.png)
UPDATE
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160421085544210-1808530826.png)
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160421085556960-58770754.png)
![](https://images2015.cnblogs.com/blog/382256/201604/382256-20160421085604507-1226269352.png)
相关文章推荐
- Mysql数据库中文字符乱码解决方案
- MYSQL数据库管理之权限管理
- com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorEx
- mysql中表名是order的CRUD的错误
- 跟我一起学习MySQL技术内幕(第五版):(第二章学习日记5)
- navicat for mysql 10.1.7注册码
- MYSQL提权细节2014-02-24 • Nots • 0 条评论 • luom •625 views
- mysql 查看没提交的事务 或者 琐行
- Mysql uploader File
- mysql5.7.11编译安装以及修改root密码小结
- MySQL之——日期时间Extract函数介绍
- 安全快速修改Mysql数据库名的5种方法
- MySQL入门很简单: 5 索引
- MySQL学习笔记—自定义函数
- Win7免安装Mysql 5.6.24版本
- MySQL(win)命令行大全
- mysql常用存储引擎
- mysql函数大全
- mysql rollup&&cube
- 查看和修改mysql数据库的最大链接数据