Mysql
From Attie's Wiki
mysql --user=$USERNAME --password=$PASSWORD
Useful commands
CREATE USER 'user'@'localhost' IDENTIFIED BY 'password';
CREATE DATABASE database;
GRANT ALL PRIVILEGES ON db.* TO 'user'@'localhost' WITH GRANT OPTION;
REVOKE ALL PRIVILEGES ON *.* FROM 'user'@'localhost';
DROP DATABASE db;
DROP USER user;