| From: | "Jonathan S(dot) Katz" <jkatz(at)postgresql(dot)org> |
|---|---|
| To: | Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>, David Rowley <dgrowleyml(at)gmail(dot)com> |
| Cc: | Michael Paquier <michael(at)paquier(dot)xyz>, Zhihong Yu <zyu(at)yugabyte(dot)com>, "Andrey V(dot) Lepikhov" <a(dot)lepikhov(at)postgrespro(dot)ru>, Teodor Sigaev <teodor(at)sigaev(dot)ru>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, PostgreSQL Developers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: POC: GROUP BY optimization |
| Date: | 2022-09-01 14:05:48 |
| Message-ID: | 9e564f8b-2c4b-6c6f-9334-e76e69af8f84@postgresql.org |
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| Lists: | pgsql-hackers |
On 9/1/22 9:06 AM, Tomas Vondra wrote:
>
>
> On 8/30/22 15:15, Jonathan S. Katz wrote:
>> On 8/18/22 3:29 AM, Tomas Vondra wrote:
>>>
>>>
>>> On 8/18/22 03:32, David Rowley wrote:
>>
>>>> Here are a couple of patches to demo the idea.
>>>>
>>>
>>> Yeah, that's an option too. I should have mentioned it along with the
>>> cpu_operator_cost.
>>>
>>> BTW would you mind taking a look at the costing? I think it's fine, but
>>> it would be good if someone not involved in the patch takes a look.
>>
>> With RMT hat on, just a friendly reminder that this is still on the open
>> items list[1] -- we have the Beta 4 release next week and it would be
>> great if we can get this resolved prior to it.
>>
>
> I know. I'll fix this by tweaking one of the cost gucs, mentioned by David.
Great -- thanks for the update!
Jonathan
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