查询用户名

>mysql use mysql;
Database changed
>mysql select user,host from user

+———+———————–+
| user    | host                  |
+———+———————–+
| root    | [127.0.0.1]             |
|         | localhost             |
| root    | localhost             |
|         | localhost.localdomain |
| root    | localhost.localdomain |
+———+———————–+
7 rows in set (0.00 sec)

mysql> show grants for root@’localhost’;

+——————————————————+
| Grants for root@localhost                                           |
+——————————————————+
| GRANT ALL PRIVILEGES ON *.* TO ‘root’@'localhost’ WITH GRANT OPTION |
+——————————————————+
1 row in set (0.00 sec)

mysql>
mysql> select db,user ,host from db;

+———+——+————–+
| db      | user | host         |
+———+——+————–+
| test    |      | %            |
| test\_% |      | %            |
| db      | test | 172.20.1.124 |
+———+——+————–+
3 rows in set (0.00 sec)

mysql>

Grant 用法

mysql> GRANT <privileges> ON <what>
-> TO <user> [IDENTIFIED BY "<password>"]
-> [WITH GRANT OPTION];

例如：GRANT USAGE ON . TO ‘discuz’@'localhost’ IDENTIFIED BY PASSWORD ’123456′;</pre>