| 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 17:04:11 |
| Message-ID: | 20180605170411.GC10899@fetter.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| 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.
Just out of curiosity, which ones don't? As of
3f85c62d9e825eedd1315d249ef1ad793ca78ed4, pg_aggregate has both of
those as NOT NULL.
Best,
David.
--
David Fetter <david(at)fetter(dot)org> http://fetter.org/
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