比如我在PC上安装有 phpmyadmin， 图形界面很友好，我的MySQL 在一台Centos服务器上，很自然的想到用phpmyadmin 去登录linux上的MySQL
How to create new database?
create database shuai_test;
How to show MySQL users?
SELECT User, Host, Password FROM mysql.user;
how to create a new MySQL user?
CREATE USER 'newuser'@'localhost' IDENTIFIED BY 'password';
Ref:
https://www.rosehosting.com/blog/mysql-show-users