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In-Reply-To: 
 <CAApHDvr4YWpiMR3RsgYwJWv-u8xoRqTAKRiYy9zUszjZOqG4Ug@mail.gmail.com>
From: Richard Guo <guofenglinux@gmail.com>
Date: Thu, 9 Oct 2025 10:49:48 +0900
Message-ID: 
 <CAMbWs4_nErgVAcuw3igo6q3Th=pFheu5MZ056ORdsU46YmuNyQ@mail.gmail.com>
Subject: Re: Eager aggregation, take 3
To: David Rowley <dgrowleyml@gmail.com>
Cc: Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>,
	Tender Wang <tndrwang@gmail.com>, Paul George <p.a.george19@gmail.com>,
	Andy Fan <zhihuifan1213@163.com>,
	PostgreSQL-development <pgsql-hackers@postgresql.org>,
 pgsql-hackers@lists.postgresql.org,
	Matheus Alcantara <matheusssilv97@gmail.com>
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Precedence: bulk

On Wed, Oct 8, 2025 at 8:14=E2=80=AFPM David Rowley <dgrowleyml@gmail.com> =
wrote:
> +-- Enable eager aggregation, which by default is disabled.
> +SET enable_eager_aggregate TO on;

> The above comment and command mismatch to my understanding from
> looking at postgresql.conf.sample and guc_parameters.dat.

Right.  This GUC was disabled by default prior to v17, and this is a
leftover from that.  Will push a fix.  Thanks for pointing it out!

- Richard