REVOKE DELETE, INSERT, UPDATE ON world.* FROM 'jim'@'localhost';
REVOKE GRANT OPTION ON world.* FROM 'jill'@'localhost';
REVOKE FILE ON *.* FROM 'jen'@'myhost.example.com';
REVOKE SELECT ON mydb.* FROM 'jen'@'myhost.example.com';
REVOKE UPDATE ON test.mytable FROM 'jen'@'myhost.example.com';
SHOW GRANTS FOR 'jen'@'myhost.example.com';
USE mysql;
DELETE FROM user WHERE User = 'jen' AND Host = 'myhost.example.com';
FLUSH PRIVILEGES;