Bug #82974 CREATE USER error message is not clear

• Submitted: 13 Sep 2016 16:55
• Modified: 22 Sep 2016 10:27
• Reporter: Oli Sennhauser
• Status: Duplicate
• Category: MySQL Server: Security: Privileges
• Severity: S4 (Feature request)
• Version: 5.7.15
• OS: Any
• CPU Architecture: Any
• Tags: create user, failed

[13 Sep 2016 16:55] Oli Sennhauser

Description:
The creation of a user failed. It took us about 30 minutes until we found that the error message indicates that the user already exists.

How to repeat:
mysql> create user 'dummy'@'%' identified by 'Abcdrs!12';
Query OK, 0 rows affected (0.00 sec)

mysql> -- minutes later

mysql> create user 'dummy'@'%' identified by 'Abcdrs!12';
ERROR 1396 (HY000): Operation CREATE USER failed for 'dummy'@'%'

Suggested fix:
Please use a better error message like "User 'dummy'@'%' already exists.".

[14 Sep 2016 9:29] Oli Sennhauser

Same situation with DROP USER:

mysql> drop user test;
ERROR 1396 (HY000): Operation DROP USER failed for 'test'@'%'

It is not true that the DROP USER failed. The DROP USER command failed because the user does not exist.

[22 Sep 2016 10:27] MySQL Verification Team

Hello Oli,

Thank you for the feature request.
This is duplicate of Bug #28331

Thanks,
Umesh