I am connected as a root user in MySql. Root user has GRANT and
grant all privileges on *.* to \'root\'@\'localhost\' with grant option;
went
test this code.
GRANT ALL PRIVILEGES ON *.* TO 'user'@'localhost' REQUIRE NONE WITH GRANT OPTION MAX_QUERIES_PER_HOUR 0 MAX_CONNECTIONS_PER_HOUR 0 MAX_UPDATES_PER_HOUR 0 MAX_USER_CONNECTIONS 0;