archlinux mariadb躺坑

systemctl start mariadb                                                             :(
==== AUTHENTICATING FOR org.freedesktop.systemd1.manage-units ====
启动“mariadb.service”需要认证。
Authenticating as: andrew
Password:
==== AUTHENTICATION COMPLETE ====
andrew@manjaro ~ % mariadb -uroot -p
Enter password:
Welcome to the MariaDB monitor.  Commands end with ; or \g.
Your MariaDB connection id is 8
Server version: 10.4.10-MariaDB Arch LinuxCopyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| diii               |
| information_schema |
| mysql              |
| performance_schema |
| test               |
+--------------------+
5 rows in set (0.004 sec)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 -ADatabase changed
MariaDB [mysql]>

初次安装一定要systemctl start mariadb
或者
#启动　　　systemctl start mariadb

#自启动　　systemctl enable mariadb

#停止　　　systemctl stop mariadb

#初始化　　mysql_secure_installation

连接、查看用户、创建用户、授权

#连接　　　　mysql -u root -p -h ip地址

#查看用户　　select user,host from mysql.user;

#创建用户　　insert into mysql.user (user,host,password) values (‘mysql’,’%’,password(‘密码’));

修改密码

update mysql.user set password=password(‘新密码’) where user=‘用户名’;

部分版本上mysql.user中没有password这一列，以上2句要稍作调整

#创建用户　　insert into mysql.user (user,host) values (‘mysql’,’%’);

#修改密码　　set password for 用户 = password(‘密码’);

#授权　　　　grant insert,update,select,delete on 数据库.* to 用户@’%’;

#撤销权限　　revoke delete on 数据库.* from 用户;

#更新权限　　flush privileges；

3.常用操作

show variables like ‘%character%’;

show databases;/show schemas;

use 数据库；

show tables;

show full columns from 表名；