Re: Commitfest 2021-11 Patch Triage - Part 1

From: Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>
To: Daniel Gustafsson <daniel(at)yesql(dot)se>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Commitfest 2021-11 Patch Triage - Part 1
Date: 2021-11-06 16:20:13
Message-ID: 9915c883-caf1-f918-558f-eae538b80c2d@enterprisedb.com
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On 11/5/21 22:15, Daniel Gustafsson wrote:
> ...
> 1651: GROUP BY optimization
> ===========================
> This is IMO a desired optimization, and after all the heavy lifting by Tomas
> the patch seems to be in pretty good shape.
>

I agree it's desirable. To move the patch forward, I need some feedback
on the costing questions, mentioned in my last review, and the overall
approach to planning (considering multiple group by variants).

regards

--
Tomas Vondra
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

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