https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=39558

--- Comment #4 from Nick Clemens (kidclamp) <[email protected]> ---
(In reply to Marcel de Rooy from comment #3)
> We are discussing this on bug 39397 too. I think that we should normally
> leave the timestamp update to sql. If the specific table changed, change the
> timestamp. If not, dont touch it.
> 
> Moving this to In discussion too.

The current situation is weird though, because it's not just 'did them marc
change' - but 'did a specific field we have mapped changed'

Right now we have to check three tables to decide if a "record" has had
changes.

The need for this comes from syncing with outside systems - 'biblios' is the
endpoint for this  - joining to the 'biblio_metadata' table makes any queries
more expensive - with the timestamps in sync we can do a simple query to fetch
the recently updated records.

Is there a use case to know that the record was updated, but not the title or
author fields?

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