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-bugs-owner+archive@lists.postgresql.org>)
	id 1oGNCT-0001e9-3V
	for pgsql-bugs@arkaria.postgresql.org; Tue, 26 Jul 2022 16:14:25 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.92)
	(envelope-from <pgsql-bugs-owner+archive@lists.postgresql.org>)
	id 1oGNCR-0005Ql-TR
	for pgsql-bugs@arkaria.postgresql.org; Tue, 26 Jul 2022 16:14:23 +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 1oGNCR-0005Qc-Lc
	for pgsql-bugs@lists.postgresql.org; Tue, 26 Jul 2022 16:14:23 +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 1oGNCP-0007fI-Ac
	for pgsql-bugs@lists.postgresql.org; Tue, 26 Jul 2022 16:14:22 +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 26QGEJio2363213;
	Tue, 26 Jul 2022 12:14:19 -0400
From: Tom Lane <tgl@sss.pgh.pa.us>
To: "David G. Johnston" <david.g.johnston@gmail.com>
cc: Bruce Momjian <bruce@momjian.us>, Yugo Nagata <nagata@sraoss.co.jp>,
        PostgreSQL mailing lists <pgsql-bugs@lists.postgresql.org>
Subject: Re: BUG #17434: CREATE/DROP DATABASE can be executed in the same
 transaction with other commands
In-reply-to: 
 <CAKFQuwYaN+SJyHcXyjAwZ7zRCze+6Xj7ns_hOEg2+fhZEJUOHg@mail.gmail.com>
References: <17434-d9f7a064ce2a88a3@postgresql.org>
 <YtCrjN0HLew0w4Ss@momjian.us> <3190751.1657845414@sss.pgh.pa.us>
 <CAKFQuwbY_vJWcvJLUz2r+zzwwhkJbjzjojfGx=Mvd9TZ0TTKew@mail.gmail.com>
 <3498921.1657919211@sss.pgh.pa.us>
 <CAKFQuwa9JQgKgg3Djrx=7p1Phhj68QEq0TWYG72Xv-nPz61r0w@mail.gmail.com>
 <805866.1658175624@sss.pgh.pa.us>
 <CAKFQuwYQpm6E4nTgiOZAGRg0JKquHaXQ0JkqruWeHuOQX6-70g@mail.gmail.com>
 <2350990.1658848101@sss.pgh.pa.us>
 <CAKFQuwYRYhF8iOD9MHp7VuZur_JvVEjDzpMHuUHNeYReB5v2Sw@mail.gmail.com>
 <2356216.1658849834@sss.pgh.pa.us>
 <CAKFQuwYxPhPVMGJ-uoV7rq291xAU3dwww2fWwMuaz6EPiruJ5g@mail.gmail.com>
 <2361330.1658851386@sss.pgh.pa.us>
 <CAKFQuwYaN+SJyHcXyjAwZ7zRCze+6Xj7ns_hOEg2+fhZEJUOHg@mail.gmail.com>
Comments: In-reply-to "David G. Johnston" <david.g.johnston@gmail.com>
	message dated "Tue, 26 Jul 2022 09:11:52 -0700"
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-ID: <2363211.1658852059.1@sss.pgh.pa.us>
Date: Tue, 26 Jul 2022 12:14:19 -0400
Message-ID: <2363212.1658852059@sss.pgh.pa.us>
List-Id: <pgsql-bugs.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-bugs@lists.postgresql.org>
List-Owner: <mailto:pgsql-bugs-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-bugs>
Archived-At: 
 <https://www.postgresql.org/message-id/2363212.1658852059%40sss.pgh.pa.us>
Precedence: bulk

"David G. Johnston" <david.g.johnston@gmail.com> writes:
> And we are back around to the fact that only by using libpq directly, or
> via the pipeline feature of pgbench, can one actually exert control over
> the implicit transaction.  The psql and general SQL interface
> implementation are just going to Sync after each command and so everything
> looks like one transaction per command to them and only explicit
> transactions matter.

Right.

> From that, the adjustment you describe above is sufficient for me.

Cool, I'll set about back-patching.

			regards, tom lane