| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | "Fujii(dot)Yuki(at)df(dot)MitsubishiElectric(dot)co(dot)jp" <Fujii(dot)Yuki(at)df(dot)mitsubishielectric(dot)co(dot)jp>, Andres Freund <andres(at)anarazel(dot)de>, Alexander Pyhalov <a(dot)pyhalov(at)postgrespro(dot)ru>, Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Julien Rouhaud <rjuju123(at)gmail(dot)com>, Daniel Gustafsson <daniel(at)yesql(dot)se>, Ilya Gladyshev <i(dot)gladyshev(at)postgrespro(dot)ru> |
| Subject: | Re: Partial aggregates pushdown |
| Date: | 2023-04-08 02:44:09 |
| Message-ID: | 3285493.1680921849@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Bruce Momjian <bruce(at)momjian(dot)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.
regards, tom lane
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