更改数据库登陆密码

登陆数据库，进入mysql数据库：


MariaDB [(none)]> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
MariaDB [mysql]> 

查看mysql数据库中user表：
MariaDB [mysql]> select user,host,password from user;
+------+-----------+-------------------------------------------+
| user | host      | password                                  |
+------+-----------+-------------------------------------------+
| root | localhost | *E56A114692FE0DE073F9A1DD68A00EEB9703F3F1 |
+------+-----------+-------------------------------------------+
1 row in set (0.00 sec)

更新user表中用户root对应的password字段：
MariaDB [mysql]> update user set password=password('123123') where user='root';
Query OK, 0 rows affected (0.02 sec)
Rows matched: 1  Changed: 0  Warnings: 0

MariaDB [mysql]> select user,host,password from user;
+------+-----------+-------------------------------------------+
| user | host      | password                                  |
+------+-----------+-------------------------------------------+
| root | localhost | *E56A114692FE0DE073F9A1DD68A00EEB9703F3F1 |
+------+-----------+-------------------------------------------+
1 row in set (0.00 sec)

刷新权限：

MariaDB [(none)]> flush privileges;
Query OK, 0 rows affected (0.00 sec)

MariaDB [mysql]>