[Koha-bugs] [Bug 20271] Merge deleted biblio, biblioitems, biblio_metadata, and items tables

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=20271

--- Comment #197 from Jonathan Druart <jonathan.druart at bugs.koha-community.org> ---
(In reply to Jonathan Druart from comment #196)
> If we want to keep the DBMS handle barode uniqueness we will need to discuss
> how to deal with that correctly then :)
> I do not like moving the column, but maybe we could add a unique constraint
> on (barcode, deleted_on).

Oops, that cannot work. Unique constraint allows multiple NULL values.

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