Re: Combining Aggregates - Mailing list pgsql-hackers

From Simon Riggs
Subject Re: Combining Aggregates
Date
Msg-id CANP8+jKHsc452Dk7+_1SDRQai5ie2OA1k9HxEANM9EujO=x_hA@mail.gmail.com
Whole thread Raw
In response to Re: Combining Aggregates  (David Rowley <david.rowley@2ndquadrant.com>)
List pgsql-hackers
On 6 April 2016 at 22:28, David Rowley <david.rowley@2ndquadrant.com> wrote:
On 7 April 2016 at 09:25, Simon Riggs <simon@2ndquadrant.com> wrote:
> On 5 April 2016 at 19:33, Robert Haas <robertmhaas@gmail.com> wrote:
>
>>
>> Committed 0002+0003 with those changes, some minor cosmetic stuff, and
>> of course the obligatory catversion bump.  Oh, and fixed an OID
>> conflict with the patch Magnus just committed.
>
>
> Is that everything now? I don't see anything about combining aggs in the git
> log and this is still showing as UnCommitted in the CF app.

There's just a documentation patch and two combine functions for
floating point aggs left now (Haribabu's patch)

Ah, I see, it was the commit about "multi-stage aggregation".

So SELECT sum(x), avg(x) is now optimized? 

--
Simon Riggs                http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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