Re: Detecting functions installed by an extension

On 17 June 2018 at 10:26, Vik Fearing <vik(dot)fearing(at)2ndquadrant(dot)com> wrote:

> On 17/06/18 10:05, Benjie Gillam wrote:
> > Greetings!
> >
> > How can I tell, using the system catalog or information schema, if a
> > function/procedure was created by an extension as opposed to by the user
> > (i.e. would be dropped if you performed "DROP EXTENSION")? So far I've
> > looked at the `pg_extension` table, which lists the class IDs of
> > configuration tables but doesn't mention procedures. I've looked at
> > `pg_proc` but that doesn't seem to contain the information. I've also
> > scanned over various other system catalogues but with no luck. Is this
> > information available in one of the system catalogs? Does PostgreSQL
> > itself track this information so that it can perform cleanup, or does it
> > expect the extension to clean up after itself?
>
> All dependencies are tracked in the system catalog pg_depend.
>
> If you do \set ECHO_HIDDEN on in psql and then \dx+ an_extension you
> can see what queries psql uses to get the information. That should put
> you well on your way to doing what you want.
> --
> Vik Fearing +33 6 46 75 15 36
> http://2ndQuadrant.fr PostgreSQL : Expertise, Formation et Support
>

It seems so obvious in retrospect! This works beautifully - thanks 🙏

Benjie.