MySQL 用户和权限

一。登录MySQL

shell> mysql -h host -u user -p

Enter password: ********

注：host: 主机名，MySQL运行在这台服务器上。

user: 用户名，MySQL的用户账号

#sock登录方式

shell>mysql -uroot -p -S /tmp/mysql5_6.sock

如果登录成功，会有mysql>这样的提示符出现，等着你输入SQL语句。

如果有 ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2) 这样的错误出现，

说明mysql服务没有运行。

启动mysql命令，

shell>bin/mysqld_safe --user=mysql &

关闭mysql命令

shell> mysqladmin -u root -p shutdown

Enter password: (enter root password here)

二。退出MySQL

命令是quit(\q)

mysql>quit

Bye

三。添加用户

mysql>CREATE USER 'test'@'localhost' IDENTIFIED BY '123456';

四。修改用户密码

mysql> SET PASSWORD FOR 'root'@'localhost' = PASSWORD('new_password');

mysql> UPDATE mysql.user SET Password = PASSWORD('new_password') WHERE User = 'root';

mysql> FLUSH PRIVILEGES;

shell> mysqladmin -u root password "new_password"

shell> mysqladmin -u root -h host_name password "new_password"

五。添加用户和权限

详细请参考官网 http://dev.mysql.com/doc/refman/5.6/en/grant.html
mysql>GRANT ALL ON *.* TO 'test'@'localhost' identified by '123456' WITH GRANT OPTION;

mysql>GRANT SELECT ON DB_NAME.* TO 'test'@'localhost' identified by '123456' WITH GRANT OPTION;

mysql>FLUSH PRIVILEGES;

六。查看用户权限

mysql>SHOW GRANTS FOR 'test'@'localhost';

七。回收权限

mysql>REVOKE ALL ON *.* FROM 'test'@'localhost';

八。删除用户

mysql>DROP USER 'test'@'localhost';