> show grants for user_readonly;
+------------------------------------------------------------------------------------------------------------+
| Grants for user_readonly@% |
+------------------------------------------------------------------------------------------------------------+
| GRANT USAGE ON *.* TO 'user_readonly'@'%' IDENTIFIED BY PASSWORD '*F60F5EBDA2568D53C7CBFD0297F1BAA324B06AABD' |
| GRANT ALL PRIVILEGES ON `mydb`.* TO 'user_readonly'@'%' |
+------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)
目前, user_readonly 对所有内容都有授权。我怎样才能改变这个,让他只能阅读?