[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 #200 from Kyle M Hall <kyle at bywatersolutions.com> ---
> We could have a boolean flag is_deleted, in addition of deleted_on that
> contains an important info. The problem is that it will not work either, as:
> The following situation should be valid but will fail the unique constraint:
> (id, is_deleted)
> (42, 1)
> (42, 0)
> (42, 0)

I don't think I understand what scenario would create a situation such as this,
could you elaborate?

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