| From: | Merlin Moncure <mmoncure(at)gmail(dot)com> |
|---|---|
| To: | Antonin Houska <ah(at)cybertec(dot)at> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: WIP: Aggregation push-down |
| Date: | 2017-09-07 14:21:10 |
| Message-ID: | CAHyXU0x_iabu=D6LGspCgeWmA9kGwHNnAODK=gHrAkg2dtZoeg@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Aug 17, 2017 at 10:22 AM, Antonin Houska <ah(at)cybertec(dot)at> wrote:
> Antonin Houska <ah(at)cybertec(dot)at> wrote:
> output type. For other aggregates (like avg()) the remote nodes will have to
> return the transient state value in an appropriate form (maybe bytea type),
> which does not depend on PG version.
Hm, that seems like an awful lot of work (new version agnostic
serialization format) for very little benefit (version independent
type serialization for remote aggregate pushdown). How about forcing
the version to be the same for the feature to be used?
merlin
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