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 ) id 1pzf0i-0002eH-Tq for pgsql-hackers@arkaria.postgresql.org; Thu, 18 May 2023 14:53:44 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1pzf0h-00080o-PD for pgsql-hackers@arkaria.postgresql.org; Thu, 18 May 2023 14:53:43 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pzf0h-00080e-Fe for pgsql-hackers@lists.postgresql.org; Thu, 18 May 2023 14:53:43 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1pzf0Z-000YBE-SW for pgsql-hackers@lists.postgresql.org; Thu, 18 May 2023 14:53:42 +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 34IErZHM3794291; Thu, 18 May 2023 10:53:35 -0400 From: Tom Lane To: Aleksander Alekseev cc: PostgreSQL Hackers Subject: Re: The documentation for READ COMMITTED may be incomplete or wrong In-reply-to: References: Comments: In-reply-to Aleksander Alekseev message dated "Thu, 18 May 2023 17:23:08 +0300" MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-ID: <3794289.1684421615.1@sss.pgh.pa.us> Content-Transfer-Encoding: 8bit Date: Thu, 18 May 2023 10:53:35 -0400 Message-ID: <3794290.1684421615@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Aleksander Alekseev writes: > A colleague of mine, Ante Krešić, got puzzled by the following behavior: That's not a documentation problem. That's a bug, and an extremely nasty one. A quick check shows that it works as expected up through v13, but fails as described in v14 and later. Needs bisecting ... regards, tom lane