mariadb grant all privileges and add user code example

Example: create database and grant user rights mariadb

create database [DB name];

CREATE USER '[DB_User_Name]'@'localhost' IDENTIFIED BY '[DB_Password]';
GRANT ALL PRIVILEGES ON [DB_Name].* TO '[DB_User_Name]'@'localhost';

show grants for 'demouser'@'localhost';

FLUSH PRIVILEGES;