MariaDB 允许创建数据库和创建用户，但授予失败？

Question

我想知道为什么 mariadb 安装允许我创建数据库并创建用户，但无法授予权限。以下是我的看法：

MariaDB [mydb]> show grants;
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Grants for root@localhost                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, SHUTDOWN, PROCESS, FILE, REFERENCES, INDEX, ALTER, SHOW DATABASES, SUPER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, REPLICATION SLAVE, BINLOG MONITOR, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, CREATE USER, EVENT, TRIGGER, CREATE TABLESPACE, DELETE HISTORY, SET USER, FEDERATED ADMIN, CONNECTION ADMIN, READ_ONLY ADMIN, REPLICATION SLAVE ADMIN, REPLICATION MASTER ADMIN, BINLOG ADMIN, BINLOG REPLAY, SLAVE MONITOR ON *.* TO `root`@`localhost` IDENTIFIED BY PASSWORD '*32F06106642D20440E25FCD31ED89DE9431B9D43' WITH GRANT OPTION |
| GRANT PROXY ON ''@'%' TO 'root'@'localhost' WITH GRANT OPTION                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.001 sec)

MariaDB [mydb]> GRANT ALL PRIVILEGES ON mydb.* TO 'mydb'@'%';
ERROR 1044 (42000): Access denied for user 'root'@'localhost' to database 'mydb'
MariaDB [mydb]> 

MariaDB 服务器版本：11.3.2-MariaDB-1:11.3.2+maria~ubu2204 mariadb.org 二进制发行版

可能是什么原因？我还可以调查什么？

Answer 1

您没有

GRANT OPTION

特权。这就是使用 GRANT 子句所需要的。