您可以尝试在末尾添加 GRANT OPTION :

You can try adding GRANT OPTION at the end:

GRANT all privileges on TESTDB.* to 'Max'@'localhost' IDENTIFIED BY 'maxkim' WITH GRANT OPTION;

您还可以使用以下命令查找用户的授权:

You can also use the below command to find the grants for a user:

SHOW GRANTS FOR 'Max'@'localhost';

另见:

• MySQL 错误 1045 (28000):用户bill"@localhost"的访问被拒绝(使用密码:是)