Common operations of mysql database

Display database
SHOW DATABASES;

create database
CREATE DATABASE test1 DEFAULT CHARSET utf8mb4 COLLATE utf8mb4_general_ci; use

database
use test1;

view database character set
SHOW VARIABLES LIKE 'character%';

found in the service bar in the server)
net start mysql57

stop mysql service
net stop mysql57

create user
    create user 'username'@'IP address' identified by 'password';
delete user
    drop user 'username'@'IP address' ;
Modify user
    rename user 'username'@'IP address'; to 'new user name'@'IP address';;