首先进入mysql bin目录下 并执行cmd

mysql -u root -p

CREATE USER 'user'@'localhost' IDENTIFIED BY 'pass';

GRANT ALL PRIVILEGES ON *.* TO 'user'@'localhost';

GRANT SELECT, INSERT, UPDATE ON database_name.* TO 'xxw'@'localhost';

FLUSH PRIVILEGES;

select host ,user from mysql.user;

GRANT SELECT, INSERT, UPDATE ON *.* TO 'AA'@'%';

FLUSH PRIVILEGES;