Here you will find useful mysql commands :
Users
Create user and grant priviliges on to the db :
GRANT ALL PRIVILEGES ON *.* TO 'username'@'localhost' IDENTIFIED BY 'password';
List all users :
SELECT User FROM mysql.user;
Delete user :
drop user username@localhost;
Tables
CREATE DATABASE wordpress DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci;
List all the databases :
show databases;
Delete a database :
drop database [database name];
Other
Connect to the mysql terminal :
sudo mysql -u root -p
Exit : FLUSH PRIVILEGES; and EXIT;