Albe Laurenz <laurenz.albe@wien.gv.at> wrote:
> Currently it is possible to change the behaviour of a function with
> CREATE OR REPLACE FUNCTION even if the function is part of an index definition.
>
> I think that should be forbidden, because it is very likely to corrupt
> the index. I expect the objection that this would break valid use cases
> where people know exactly what they are doing, but I believe that this
> is a footgun for inexperienced users that should be disarmed.
>
> I'd also opt for forbidding behaviour changing modifications with ALTER FUNCTION
> for functions used in index definitions, specifically altering strictness.
>
> Attached is a patch implementing a fix.
Instead of adding extra check, shouldn't you just ensure that
DEPENDENCY_INTERNAL is the dependency type and let the existing logic do the work?
--
Antonin Houska
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
A-2700 Wiener Neustadt
Web: http://www.postgresql-support.de, http://www.cybertec.at
