On Fri, Apr 7, 2023 at 10:44:09PM -0400, Tom Lane wrote:
> Bruce Momjian <bruce@momjian.us> writes:
> > On Fri, Apr 7, 2023 at 09:55:00PM -0400, Tom Lane wrote:
> >> Uh, what? Why would we not be able to tell from the remote server's
> >> version number whether it has this ability?
>
> > The issue is not a mismatch of postgres_fdw versions but the extension
> > versions and whether the partial aggregate functions exist on the remote
> > side, e.g., something like a PostGIS upgrade.
>
> postgres_fdw has no business pushing down calls to non-builtin functions
> unless the user has explicitly authorized that via the existing
> whitelisting mechanism. I think you're reinventing the wheel,
> and not very well.
The patch has you assign an option at CREATE AGGREGATE time if it can do
push down, and postgres_fdw checks that. What whitelisting mechanism
are you talking about? async_capable?
--
Bruce Momjian <bruce@momjian.us> https://momjian.us
EDB https://enterprisedb.com
Embrace your flaws. They make you human, rather than perfect,
which you will never be.