1. zhangsan用户可以从任何ip连接

GRANT SELECT,INSERT,UPDATE,SELECT ON test.* to zhangsan@'%' IDENTIFIED BY '123';

1. zhangsan用户可以从本地执行所有权限

GRANT ALL PRIVILEGES ON *.* to zhangsan@'localhost' IDENTIFIED BY '123';

1. 权限回收

REVOKE SELECT ON *.* FROM zhangsan@localhost

1. 刷新权限

FLUSH PRIVILEGES;