[Koha-bugs] [Bug 26156] Record matching rule code should be unique

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

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=26156

--- Comment #3 from David Cook <dcook at prosentient.com.au> ---
(In reply to Katrin Fischer from comment #2)
> I am not sure if I see the need as the table has a primary key that is
> unique and that key is used for example when you use the matching rules with
> the command line scripts.
> 

The primary key isn't very friendly though. I've done some work with matching
rules (before discarding it), and working with the codes is much nicer. 

It's also possible that you could delete your record matching rule and
re-create it, and then your old primary key is gone, but your code could still
be the same. 

> We don't keep people from naming other things the same - it seems if they
> do, that's not ideal, but doesn't necessarily need a code solution.

Well, this would be a database schema change rather than a code solution per
se. It would just be making a unique key for the code column. (The code
solution would just be necessary at update time before creating the unique key
to prevent fatal database errors.)

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