[Koha-bugs] [Bug 29009] New: Attempting to Koha-restore shows unnecessary SQL error

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=29009

            Bug ID: 29009
           Summary: Attempting to Koha-restore shows unnecessary SQL error
 Change sponsored?: ---
           Product: Koha
           Version: 21.05
          Hardware: All
                OS: All
            Status: NEW
          Severity: trivial
          Priority: P5 - low
         Component: Installation and upgrade (command-line installer)
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: matthew.lindfield-seager at hope.edu.kh
        QA Contact: testopia at bugs.koha-community.org

`koha-restore` command outputs an error about being unable to drop the user:

`ERROR 1396 (HY000) at line 1: Operation DROP USER failed for
'koha_library'@'%'`

This can be avoided by adding `IF EXISTS` to the command (as has been done in
[`koha-remove`](https://github.com/Koha-Community/Koha/blob/a5a3a330cfc7c7d6c35db13326745dabf8fe0df3/debian/scripts/koha-remove#L69-70)

Tested on Ubuntu 20.04 LTS with Koha 21.05.02.003 and 21.05.03.001

N.B. This bug was originally filed as a [PR on
GitHub](https://github.com/Koha-Community/Koha/pull/42)

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