1、登陆mysql数据库
mysql -u root -p
查看user表
C:\Users\Administrator>C:\mysql\bin\mysql.exe -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 7
Server version: 5.6.40-ndb-7.4.20-cluster-gpl MySQL Cluster Community Server (GP
L)
mysql> use mysql;
Database changed
mysql> select host,user,password from user;
+-----------+------+----------+
| host | user | password |
+-----------+------+----------+
| localhost | root | |
| 127.0.0.1 | root | |
| ::1 | root | |
| localhost | | |
+-----------+------+----------+
4 rows in set (0.00 sec)
mysql>
可以看到在user表中已创建的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%。
update user set host = ’%’ where user = ’root’;
将权限改为ALL PRIVILEGES
mysql> use mysql;
Database changed
mysql> grant all privileges on *.* to root@'%' identified by "";
Query OK, 0 rows affected (0.03 sec)
mysql> select host,user,password from user;
+-----------+------+----------+
| host | user | password |
+-----------+------+----------+
| localhost | root | |
| 127.0.0.1 | root | |
| ::1 | root | |
| localhost | | |
| % | root | |
+-----------+------+----------+
5 rows in set (0.02 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、实现远程连接（改表法）
use mysql;
update user set host = '%' where user = 'root';
这样在远端就可以通过root用户访问Mysql.
