Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps
 (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <pgsql-performance-owner+archive@lists.postgresql.org>)
	id 1jmPX7-000809-Jw
	for pgsql-performance@arkaria.postgresql.org; Fri, 19 Jun 2020 22:30:49 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.92)
	(envelope-from <pgsql-performance-owner+archive@lists.postgresql.org>)
	id 1jmPX6-0003l3-GV
	for pgsql-performance@arkaria.postgresql.org; Fri, 19 Jun 2020 22:30:48 +0000
Received: from makus.postgresql.org ([2001:4800:3e1:1::229])
	by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1jmPX6-0003kw-56
	for pgsql-performance@lists.postgresql.org; Fri, 19 Jun 2020 22:30:48 +0000
Received: from sss.pgh.pa.us ([66.207.139.130])
	by makus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1jmPX3-0008N7-RV
	for pgsql-performance@lists.postgresql.org; Fri, 19 Jun 2020 22:30:47 +0000
Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1])
	by sss.pgh.pa.us (8.15.2/8.15.2) with ESMTP id 05JMUjET1760786;
	Fri, 19 Jun 2020 18:30:45 -0400
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Kenneth Marshall <ktm@rice.edu>
cc: pgsql-performance@lists.postgresql.org
Subject: Re: PostgreSQL 12.3 slow index scan chosen
In-reply-to: <20200619222533.GN1497@aart.rice.edu>
References: <20200619194914.GI1497@aart.rice.edu>
 <1755412.1592597470@sss.pgh.pa.us> <20200619204950.GL1497@aart.rice.edu>
 <1757512.1592600355@sss.pgh.pa.us> <20200619212338.GM1497@aart.rice.edu>
 <1759984.1592604634@sss.pgh.pa.us> <20200619222533.GN1497@aart.rice.edu>
Comments: In-reply-to Kenneth Marshall <ktm@rice.edu>
	message dated "Fri, 19 Jun 2020 17:25:33 -0500"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <1760784.1592605845.1@sss.pgh.pa.us>
Date: Fri, 19 Jun 2020 18:30:45 -0400
Message-ID: <1760785.1592605845@sss.pgh.pa.us>
List-Id: <pgsql-performance.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-performance@lists.postgresql.org>
List-Owner: <mailto:pgsql-performance-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-performance>
Precedence: bulk

Kenneth Marshall <ktm@rice.edu> writes:
> On Fri, Jun 19, 2020 at 06:10:34PM -0400, Tom Lane wrote:
>> Hmm, does seem like you have some outlier keys.  Are any of the keys in
>> the column you're trying to join to larger than 27667772?

> The only values above 27667772? for objectid are:

Sorry, I meant the other join column, ie articles.id.

			regards, tom lane