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From: Tom Lane <tgl@sss.pgh.pa.us>
To: David Rowley <dgrowleyml@gmail.com>
Cc: Kaimeh <kkaimeh@gmail.com>
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: Error when using array_agg with filter where clause in pg16 and pg17
Date: Tue, 08 Apr 2025 22:36:26 -0400
Message-ID: <112033.1744166186@sss.pgh.pa.us> (raw)
In-Reply-To: <CAApHDvqi79jXFBeaOSDok8psEkTpzgHzaKje6VCyKVtj=Ss1_A@mail.gmail.com>
References: <CAK-+Jz9J=Q06-M7cDJoPNeYbz5EZDqkjQbJnmRyQyzkbRGsYkA@mail.gmail.com>
	<4040920.1744126348@sss.pgh.pa.us>
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	<90177.1744158354@sss.pgh.pa.us>
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	<101611.1744159946@sss.pgh.pa.us>
	<CAApHDvqi79jXFBeaOSDok8psEkTpzgHzaKje6VCyKVtj=Ss1_A@mail.gmail.com>

David Rowley <dgrowleyml@gmail.com> writes:
> I'm not following why my in method if the planner chooses a poor plan
> is any different from the planner choosing a poor plan for anything
> else because the stats or costs aren't a good reflection of reality.

Well, we hope we'll usually pick the right thing.  But upthread
you were complaining that any change might be a regression, or
at least that's how I read it.

			regards, tom lane





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