Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256)
	(Exim 4.89)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1ipwGD-0003wY-5F
	for pgsql-hackers@arkaria.postgresql.org; Fri, 10 Jan 2020 15:31:41 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.89)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1ipwGB-0001Pi-32
	for pgsql-hackers@arkaria.postgresql.org; Fri, 10 Jan 2020 15:31:39 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256)
	(Exim 4.89)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1ipwGA-0001Pb-QB
	for pgsql-hackers@lists.postgresql.org; Fri, 10 Jan 2020 15:31:38 +0000
Received: from sss.pgh.pa.us ([66.207.139.130])
	by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <tgl@sss.pgh.pa.us>)
	id 1ipwG8-0006q3-2x
	for pgsql-hackers@lists.postgresql.org; Fri, 10 Jan 2020 15:31:38 +0000
Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1])
	by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id 00AFVUbI029243;
	Fri, 10 Jan 2020 10:31:31 -0500
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Alexander Korotkov <a.korotkov@postgrespro.ru>
cc: Tomas Vondra <tomas.vondra@2ndquadrant.com>,
        Nikita Glukhov <n.gluhov@postgrespro.ru>,
        PostgreSQL Hackers <pgsql-hackers@lists.postgresql.org>,
        Julien Rouhaud <rjuju123@gmail.com>,
        Thomas Munro <thomas.munro@gmail.com>,
        Marc Cousin <cousinmarc@gmail.com>
Subject: Re: Avoid full GIN index scan when possible
In-reply-to: 
 <CAPpHfdthhf8S-UjE46hjy+g7pgGhy=hav1-BUmQq6+hKmY13nA@mail.gmail.com>
References: 
 <CAOBaU_b3u1xpoESb2JD6dQ4V7fhwmbfOFW5PiadZHJX6bNdnfw@mail.gmail.com>
 <17590.1564685940@sss.pgh.pa.us>
 <CAPpHfdvfK+Zk=MjjC1M_66+ALD+vdR6BG3quoFAZzjL6hNv-NQ@mail.gmail.com>
 <19189.1564687723@sss.pgh.pa.us>
 <a6e1564e-98c8-e420-cfaf-0309316c4910@postgrespro.ru>
 <19438.1565209940@sss.pgh.pa.us>
 <f2889144-db1d-e3b2-db97-cfc8794cda43@postgrespro.ru>
 <CAPpHfdsXN5iq3rUwjuwtp_GRFmhq+1QAtgiywGM_6YM9PdGdMg@mail.gmail.com>
 <CAPpHfdvT_t6ShG2pvptEWceDxEnyNRsm2MxmCWWvxBzQ-pbMuw@mail.gmail.com>
 <b53614eb-6f9f-8c5c-9df8-f703b0b102b6@postgrespro.ru>
 <20200106152155.uuungi2p776p5lbk@development>
 <CAPpHfdthhf8S-UjE46hjy+g7pgGhy=hav1-BUmQq6+hKmY13nA@mail.gmail.com>
Comments: In-reply-to Alexander Korotkov <a.korotkov@postgrespro.ru>
	message dated "Wed, 08 Jan 2020 19:31:52 +0300"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <29241.1578670290.1@sss.pgh.pa.us>
Date: Fri, 10 Jan 2020 10:31:30 -0500
Message-ID: <29242.1578670290@sss.pgh.pa.us>
List-Id: <pgsql-hackers.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-hackers@lists.postgresql.org>
List-Owner: <mailto:pgsql-hackers-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-hackers>
Precedence: bulk

Alexander Korotkov <a.korotkov@postgrespro.ru> writes:
> So, I think v10 is a version of patch, which can be committed after
> some cleanup.  And we can try doing better nulls handling in a separate
> patch.

The cfbot reports that this doesn't pass regression testing.
I haven't looked into why not.

			regards, tom lane