Received: from malur.postgresql.org ([2a02:16a8:dc51::56])
	by arkaria.postgresql.org with esmtps
 (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256)
	(Exim 4.89)
	(envelope-from <pgsql-admin-owner+archive@lists.postgresql.org>)
	id 1fpLaD-0001dB-Od
	for pgsql-admin@arkaria.postgresql.org; Mon, 13 Aug 2018 22:45:05 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.89)
	(envelope-from <pgsql-admin-owner+archive@lists.postgresql.org>)
	id 1fpLaC-00014A-2W
	for pgsql-admin@arkaria.postgresql.org; Mon, 13 Aug 2018 22:45:04 +0000
Received: from makus.postgresql.org ([2001:4800:1501:1::229])
	by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256)
	(Exim 4.89)
	(envelope-from <scott_ribe@elevated-dev.com>)
	id 1fpLaB-000143-OC
	for pgsql-admin@lists.postgresql.org; Mon, 13 Aug 2018 22:45:03 +0000
Received: from mailout.easymail.ca ([64.68.200.34])
	by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256)
	(Exim 4.89)
	(envelope-from <scott_ribe@elevated-dev.com>)
	id 1fpLa4-0007YS-Bf
	for pgsql-admin@postgresql.org; Mon, 13 Aug 2018 22:45:02 +0000
Received: from localhost (localhost [127.0.0.1])
	by mailout.easymail.ca (Postfix) with ESMTP id BB45CC0D6F;
	Mon, 13 Aug 2018 22:44:54 +0000 (UTC)
Received: from mailout.easymail.ca ([127.0.0.1])
	by localhost (emo01-pco.easydns.vpn [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id pAwUHEDhm-Ir; Mon, 13 Aug 2018 22:44:54 +0000 (UTC)
Received: from [192.168.2.16] (unknown [8.39.228.117])
	(using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
	(No client certificate requested)
	by mailout.easymail.ca (Postfix) with ESMTPSA id 0A3E9C0D50;
	Mon, 13 Aug 2018 22:44:52 +0000 (UTC)
Content-Type: text/plain;
	charset=us-ascii
Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\))
Subject: Re: PostgreSQL 11 global index
From: Scott Ribe <scott_ribe@elevated-dev.com>
In-Reply-To: <1534199984998-0.post@n3.nabble.com>
Date: Mon, 13 Aug 2018 16:44:49 -0600
Cc: pgsql-admin@postgresql.org
Content-Transfer-Encoding: quoted-printable
Message-Id: <FA5846F6-CF05-46E8-ACB1-72FC16CCB0BD@elevated-dev.com>
References: 
 <CA+t6e1=uvR0PP_K8FtvMuebzrAofyzsTbMJoQB1pzimTBwfmOA@mail.gmail.com>
 <CAHw75vtyx-VHPY6tWQSYf52ofDG4D8pCZ6N3E_ZwS5yUmb88nQ@mail.gmail.com>
 <CA+t6e1=eJZotPr_cDh-b8PoYq3XXT3B1zh1-kyr_6AoH11GEkA@mail.gmail.com>
 <20180806100201.42a3c794@firost>
 <CA+t6e1=djbUK3XN8PshRETvO_9D92HWgqdf7iw=arRHZ7knbEw@mail.gmail.com>
 <20180806123050.1fab3011@firost> <1534199984998-0.post@n3.nabble.com>
To: legrand legrand <legrand_legrand@hotmail.com>
X-Mailer: Apple Mail (2.3445.9.1)
List-Id: <pgsql-admin.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-admin@lists.postgresql.org>
List-Owner: <mailto:pgsql-admin-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-admin>
Precedence: bulk

Parse time & execution time.

Why are you not just using a sequence?

Do you have an application which requires contiguous numbers?

--
Scott Ribe
scott_ribe@elevated-dev.com
https://www.linkedin.com/in/scottribe/



> On Aug 13, 2018, at 4:39 PM, legrand legrand =
<legrand_legrand@hotmail.com> wrote:
>=20
> I'm suspecting parsing time for "SELECT count(1) > 1 FROM tabpart =
WHERE id =3D
> NEW.id",