| From: | David Fetter <david(at)fetter(dot)org> |
|---|---|
| To: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Heikki Linnakangas <hlinnaka(at)iki(dot)fi>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>, Jeff Davis <pgsql(at)j-davis(dot)com> |
| Subject: | Re: Spilling hashed SetOps and aggregates to disk |
| Date: | 2018-06-05 15:50:27 |
| Message-ID: | 20180605155027.GB10899@fetter.org |
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| Thread: | |
| Lists: | pgsql-hackers |
On Tue, Jun 05, 2018 at 02:56:23PM +1200, David Rowley wrote:
> On 5 June 2018 at 06:52, Andres Freund <andres(at)anarazel(dot)de> wrote:
> > That part has gotten a bit easier since, because we have serialize /
> > deserialize operations for aggregates these days.
>
> True. Although not all built in aggregates have those defined.
That is a SMoP which we could, at some point, enforce by requiring
that they always be defined. Is there something other than round
tuits that's preventing that?
Best,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
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