[Koha-bugs] [Bug 34520] Database update 22.06.00.078 breaks update process

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=34520

--- Comment #3 from Katrin Fischer <katrin.fischer at bsz-bw.de> ---
Created attachment 158041
  -->
https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=158041&action=edit
Bug 34520: Fix FK for item_groups in reserves for new installations

There was a discrepancy between the database update for reserves
and the kohastructure.sql definition. This makes sure that the
FK is always "ON DELETE SET NULL".

To test:
* Before applying this path
* sudo koha-mysql kohadev
* show create table reserves;

CONSTRAINT `reserves_ibfk_ig` FOREIGN KEY (`item_group_id`) REFERENCES
`item_groups` (`item_group_id`) ON DELETE CASCADE ON UPDATE CASCADE

* Apply patch
* Run database update
* Check database again:

CONSTRAINT `reserves_ibfk_ig` FOREIGN KEY (`item_group_id`) REFERENCES
`item_groups` (`item_group_id`) ON DELETE SET NULL ON UPDATE CASCADE

* reset_all (create a new database)
* Check database again:

CONSTRAINT `reserves_ibfk_ig` FOREIGN KEY (`item_group_id`) REFERENCES
`item_groups` (`item_group_id`) ON DELETE SET NULL ON UPDATE CASCADE

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