Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.98.2)
	(envelope-from <pgsql-docs-owner+archive@lists.postgresql.org>)
	id 1xA5h1-00000002RhW-3a8c
	for pgsql-docs@arkaria.postgresql.org;
	Fri, 25 Sep 2026 13:10:24 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.98.2)
	(envelope-from <pgsql-docs-owner+archive@lists.postgresql.org>)
	id 1xA5gz-00000000mkm-1ezj
	for pgsql-docs@arkaria.postgresql.org;
	Fri, 25 Sep 2026 13:10:21 +0000
Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29])
	by malur.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.98.2)
	(envelope-from <noreply@postgresql.org>)
	id 1xA2Iq-000000009jM-1CYr
	for pgsql-docs@lists.postgresql.org;
	Fri, 25 Sep 2026 09:33:12 +0000
Received: from mahout.postgresql.org ([2001:4800:3e1:1::227])
	by magus.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.98.2)
	(envelope-from <noreply@postgresql.org>)
	id 1xA2Ik-00000001DDi-3ne9
	for pgsql-docs@lists.postgresql.org;
	Fri, 25 Sep 2026 09:33:11 +0000
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
	d=postgresql.org; s=20171124; h=Message-ID:Date:Reply-To:Cc:From:To:Subject:
	Content-Transfer-Encoding:MIME-Version:Content-Type:Sender:Content-ID:
	Content-Description:In-Reply-To:References;
	bh=UH3q4yy17FNnmyCaPj4xqlwQjZNP1P+qBmNhcbinncc=; b=6R1qSepYNKt/rCRBZS78qXCJZy
	pwEpGTKj6IWqxWyf3DCwXnt3zVjVICLnDAbAEVZ73UhP8NS/imDAXZ+w39HbvfiXbNYtzfaPn9HRc
	3rOmJx5YtWFIHq7XqU7Q3xMyeE3/LzSBvsKiI+bZRx95KnIQw/3ZfXlBxX7pRAZEjdLW6U8t8F148
	aSUcbzGYMXh4fwEqsNKtbqOLM7UvCG8KSHX/E8k2f3XFatyN9YDpGl/KHmIDVjnNBsj4/8HXW3Es7
	S7XNk6g8GoiQ1MFZvFa92vawfpDPXn81sjZAxpt1NoRONsH9EVGk7xkZ0zdCM3A2qVdRQuXBMPPF9
	H2YDFihg==;
Received: from wrigleys.postgresql.org ([2a02:16a8:dc51::60])
	by mahout.postgresql.org with esmtps  (TLS1.3) tls
 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
	(Exim 4.96)
	(envelope-from <noreply@postgresql.org>)
	id 1xA2Ij-003TjG-1B
	for pgsql-docs@lists.postgresql.org;
	Fri, 25 Sep 2026 09:33:05 +0000
Received: from localhost ([127.0.0.1] helo=wrigleys.postgresql.org)
	by wrigleys.postgresql.org with esmtp (Exim 4.98.2)
	(envelope-from <noreply@postgresql.org>)
	id 1xA2Ih-00000009zHY-158r
	for pgsql-docs@lists.postgresql.org;
	Fri, 25 Sep 2026 09:33:03 +0000
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable
Subject: log_line_prefix and JSON log format
To: pgsql-docs@lists.postgresql.org
From: PG Doc comments form <noreply@postgresql.org>
Cc: michael@schoenitzer.de
Reply-To: michael@schoenitzer.de, pgsql-docs@lists.postgresql.org
Date: Fri, 25 Sep 2026 09:32:36 +0000
Message-ID: <179032875673.1026201.6950455317699774504@wrigleys.postgresql.org>
X-Auto-Response-Suppress: All
Auto-Submitted: auto-generated
List-Id: <pgsql-docs.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-docs@lists.postgresql.org>
List-Owner: <mailto:pgsql-docs-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-docs>
Archived-At: 
 <https://www.postgresql.org/message-id/179032875673.1026201.6950455317699774504%40wrigleys.postgresql.org>
Precedence: bulk

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/18/index.html
Description:

I noticed, that it not documented anywhere what log_line_prefix will do, if
log_destination =3D 'jsonlog' (Or CSV). From my tests it seems it is ignored
and does nothing. But we weren't sure and would be helpful to have this
documented.