Re: PoC: using sampling to estimate joins / complex conditions

From: Michael Paquier <michael(at)paquier(dot)xyz>
To: Tomas Vondra <tomas(dot)vondra(at)enterprisedb(dot)com>
Cc: PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: PoC: using sampling to estimate joins / complex conditions
Date: 2021-12-03 07:46:56
Message-ID: YanLcH6NXISaOc/7@paquier.xyz
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On Sun, Jun 27, 2021 at 07:55:24PM +0200, Tomas Vondra wrote:
> estimating joins is one of the significant gaps related to extended
> statistics, and I've been regularly asked about what we might do about
> that. This is an early experimental patch that I think might help us
> with improving this, possible even in PG15.

The patch does not apply, so a rebase would be in place. I have
switched that as waiting on author for now, moving it to the next CF.
--
Michael

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