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From: Robert Haas <robertmhaas@gmail.com>
Date: Wed, 27 Jul 2022 12:27:06 -0400
Message-ID: 
 <CA+TgmoZzmThMvz9HVqSTD1ESWbzn=KpWpag6SMsJQi+NbN3ghQ@mail.gmail.com>
Subject: Re: generic plans and "initial" pruning
To: Amit Langote <amitlangote09@gmail.com>
Cc: Jacob Champion <jchampion@timescale.com>, Zhihong Yu <zyu@yugabyte.com>,
	David Rowley <dgrowleyml@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>,
	PostgreSQL-development <pgsql-hackers@postgresql.org>
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Precedence: bulk

On Tue, Jul 26, 2022 at 11:01 PM Amit Langote <amitlangote09@gmail.com> wrote:
> Needed to be rebased again, over 2d04277121f this time.

0001 adds es_part_prune_result but does not use it, so maybe the
introduction of that field should be deferred until it's needed for
something.

I wonder whether it's really necessary to added the PartitionPruneInfo
objects to a list in PlannerInfo first and then roll them up into
PlannerGlobal later. I know we do that for range table entries, but
I've never quite understood why we do it that way instead of creating
a flat range table in PlannerGlobal from the start. And so by
extension I wonder whether this table couldn't be flat from the start
also.

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