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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Richard Guo <guofenglinux@gmail.com>
Cc: exclusion@gmail.com
Cc: pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #19037: Planner fails on estimating array length with "no relation entry" error
Date: Tue, 02 Sep 2025 11:27:15 -0400
Message-ID: <589702.1756826835@sss.pgh.pa.us> (raw)
In-Reply-To: <CAMbWs4_KfP=2Rkne2+fAHE8yQAuZL2C8wH4DSLrOa4s5v=yN7g@mail.gmail.com>
References: <19037-3d1c7bb553c7ce84@postgresql.org>
	<50858.1756590676@sss.pgh.pa.us>
	<CAMbWs4_5Q3V_M1FavN07TxcOHhE38vtBaHs-LM2-RN=paYGi-g@mail.gmail.com>
	<346889.1756738657@sss.pgh.pa.us>
	<CAMbWs4_KfP=2Rkne2+fAHE8yQAuZL2C8wH4DSLrOa4s5v=yN7g@mail.gmail.com>

Richard Guo <guofenglinux@gmail.com> writes:
> Here is the patch that passes root as NULL to cost_qual_eval() in
> cost_subplan(), along with some commentary about why.

v2 LGTM.  I did think of a way to make the test case a little
less busy-looking:

select (1 = any(array_agg(f1))) = any (select false) from int4_tbl;

but that's just cosmetic.

			regards, tom lane





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