常用SQL

新建数据库
CREATE DATABASE IF NOT EXISTS my_db default charset utf8 COLLATE utf8_general_ci;

MariaDB启动/停止/重启命令
启动MariaDB命令：systemctl start mariadb.service
停止MariaDB命令：systemctl stop mariadb.service
重启MariaDB命令：systemctl restart mariadb.service

#1862 - Your password has expired. To log in you must change it using a client that supports expired passwords.
Enter this in terminal (in /usr/local/mysql/bin/) mysqladmin -u root -p password
Enter your password
Enter New password

mysql建directory_安装mysql-8.0.19-winx64遇到的问题：Can’t create directory ‘xxxx\Database’
https://blog.youkuaiyun.com/weixin_39629617/article/details/114848462