https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=23875

--- Comment #10 from Katrin Fischer <[email protected]> ---
And by the reasoning that we can't prevent other fields being added... doesn't
that apply to all other indexes as well? Would Elastic give you an error when
searching on a string in a numerical index or just not sort them 'right'?(In
reply to Ere Maijala from comment #9)
> (In reply to Katrin Fischer from comment #8)
> > Maybe we should have an unchangeable index for biblionumber then? The
> > sorting could quickly become an issue. People tend to search very 'broadly'
> > and then the tie breaker would come in quickly. At least that's what we see
> > with Zebra quite often with searches for single words and similar.
> 
> Using non-numeric sort doesn't really matter for tie-breaker unless you care
> for the order. I'd actually like us to have a hard-coded biblionumber index
> field. One could also argue that biblionumber should only be the last
> resort, and publication date should be the primary. We'll probably end up
> making it configurable. ;)

publication date can get quickly problematic for serials... the first date in
008 is usually quite old. Every approach has its own problems ;)

Maybe we can move the discussion of adding a hardcoded biblionumber index into
another bug, but it really bugs me that the sorting of a clearly numerical
value would be alphabetic... it just seems very wrong. I've ended up explaining
the 'last resort' ordering a lot of times to libraries.

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