1、进入MySQL，创建一个新用户root,密码为root：格式：grant 权限 on 数据库名.表名 to 用户@登录主机 identified by "用户密码";
1. grant select,update,insert,delete on *.* to root@192.168.1.12 identified by "root";
原先数据表结构
1. MySQL> use MySQL;
2. Database changed
3. MySQL> select host,user,password from user;
4. +-----------+------+-------------------------------------------+
5. | host | user | password |
6. +-----------+------+-------------------------------------------+
7. | localhost | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
8. +-----------+------+-------------------------------------------+
执行上述语句后结果
1. MySQL> use MySQL;
2. Database changed
3. MySQL> select host,user,password from user;
4. +--------------+------+-------------------------------------------+
5. | host | user | password |
6. +--------------+------+-------------------------------------------+
7. | localhost | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
8. | 192.168.1.12 | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
9. +--------------+------+-------------------------------------------+
10. 2 rows in set (0.00 sec) 可以看到在user表中已有刚才创建的root用户。host字段表示登录的主机，其值可以用IP，也可用主机名， (1)有时想用本地IP登录，那么可以将以上的Host值改为自己的Ip即可。
2、实现MySQL远程连接(授权法) 将host字段的值改为%就表示在任何客户端机器上能以root用户登录到MySQL服务器，建议在开发时设为%。
1. update user set host = ’%’ where user = ’root’; 将权限改为ALL PRIVILEGES 1. MySQL> use MySQL;
2. Database changed
3. MySQL> grant all privileges on *.* to root@'%' identified by "root";
4. Query OK, 0 rows affected (0.00 sec) 5. MySQL> select host,user,password from user;
6. +--------------+------+-------------------------------------------+
7. | host | user | password |
8. +--------------+------+-------------------------------------------+
9. | localhost | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
10. | 192.168.1.12 | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
11. | % | root | *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B |
12. +--------------+------+-------------------------------------------+
3 rows in set (0.00 sec) 这样机器就可以以用户名root密码root远程访问该机器上的MySQL.
3、实现MySQL远程连接（改表法）
1. use MySQL;
2. update user set host = '%' where user = 'root'; 这样在远端就可以通过root用户访问MySQL.

FLUSH PRIVILEGES;