Re: remove_useless_joins vs. bug #19560

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Thom Brown <thom(at)linux(dot)com>
Cc: Richard Guo <guofenglinux(at)gmail(dot)com>, pgsql-hackers(at)lists(dot)postgresql(dot)org
Subject: Re: remove_useless_joins vs. bug #19560
Date: 2026-07-25 21:23:07
Message-ID: 2746010.1785014587@sss.pgh.pa.us
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Thom Brown <thom(at)linux(dot)com> writes:
> I can't get this to crash in a standard build, but with asserts, I can:

Thanks for the report! I'd seen the same failed
Assert("root->hasLateralRTEs") in the core tests with an earlier draft
of this patch, but I thought it was resolved. Obviously not ... I'll
look closer tomorrow.

As for the speed question, I'd not poked at the details of Claude's
claim, but I guess I should have.

regards, tom lane

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