Re: [PG19] Hash join writes null-keyed outer rows to temp files

From: shihao zhong <zhong950419(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: [PG19] Hash join writes null-keyed outer rows to temp files
Date: 2026-10-23 01:33:14
Message-ID: CAGRkXqTZ_mkxJCuKHZPkqNPu3t-995fWfj7Uuw6t=60=qcXuTg@mail.gmail.com
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> Why would that be an improvement?

Fair enough. My thought was only that the tuplestore is now a
parallel-only thing, and I have seen a later change break an
assumption like that without anyone noticing.

But that code works for the serial case too, so there is nothing to
protect here. Please ignore it.

Thanks,
Shihao

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