| From: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Sharing aggregate states between different aggregate functions |
| Date: | 2015-07-09 09:44:11 |
| Message-ID: | CAKJS1f86DVFj1S-ikSfppve5GqF5AWjUiZgvS=xydwj-82Tkmw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 15 June 2015 at 12:05, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> wrote:
>
> This basically allows an aggregate's state to be shared between other
> aggregate functions when both aggregate's transition functions (and a few
> other things) match
> There's quite a number of aggregates in our standard set which will
> benefit from this optimisation.
>
>
After compiling the original patch with another compiler, I noticed a
couple of warnings.
The attached fixes these.
Regards
David Rowley
--
David Rowley http://www.2ndQuadrant.com/
<http://www.2ndquadrant.com/>
PostgreSQL Development, 24x7 Support, Training & Services
| Attachment | Content-Type | Size |
|---|---|---|
| sharing_agg_states_5f0bff89_2015-07-09.patch | application/octet-stream | 47.4 KB |
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