Horton

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

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: Tomas Vondra <tomas.vondra@enterprisedb.com>
Cc: Luc Vlaming <luc@swarm64.com>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2021-04-15T00:16:29Z
Lists: pgsql-hackers 
On Mon, Apr 12, 2021 at 8:37 AM Tomas Vondra
<tomas.vondra@enterprisedb.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

Commits

  1. Rename find_em_expr_usable_for_sorting_rel.

  2. Fix planner failure in some cases of sorting by an aggregate.