Re: "could not find pathkey item to sort" for TPC-DS queries 94-96

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>
Cc: Luc Vlaming <luc(at)swarm64(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: "could not find pathkey item to sort" for TPC-DS queries 94-96
Date: 2021-04-15 00:16:29
Message-ID: CA+TgmoY-OD-qmU-gwLxwH+nv_9WK60UkTUk=oCcHVh1RECfDFg@mail.gmail.com
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On Mon, Apr 12, 2021 at 8:37 AM Tomas Vondra
<tomas(dot)vondra(at)enterprisedb(dot)com> wrote:
> Could be related to incremental sort, which allowed some gather merge
> paths that were impossible before. We had a couple issues related to
> that fixed in November, IIRC.

Hmm, could be. Although, the stack trace at issue doesn't seem to show
a call to create_incrementalsort_plan().

--
Robert Haas
EDB: http://www.enterprisedb.com

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