Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1ZLyWn-0006lq-LG for pgsql-docs@arkaria.postgresql.org; Sun, 02 Aug 2015 19:02:33 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.84) (envelope-from ) id 1ZLyWn-00044X-7K for pgsql-docs@arkaria.postgresql.org; Sun, 02 Aug 2015 19:02:33 +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 4.84) (envelope-from ) id 1ZLyWm-00044N-OV for pgsql-docs@postgresql.org; Sun, 02 Aug 2015 19:02:33 +0000 Received: from mail-io0-x22f.google.com ([2607:f8b0:4001:c06::22f]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.84) (envelope-from ) id 1ZLyWk-0004M8-Az for pgsql-docs@postgresql.org; Sun, 02 Aug 2015 19:02:31 +0000 Received: by ioea135 with SMTP id a135so126687913ioe.1 for ; Sun, 02 Aug 2015 12:02:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=wJmQQ0V5NrwIIUVrqCgZpWQQaRGYSByOlOiq7VeWwjc=; b=eXA+v4KcJ304UQ3fuEVo8un6S3Usxqrp30/uLSjZD7yCTkDbHd0iQaJx8p39pZcdas SNilKwsRQjtR3ElM+CBpmbULjhxpdxcOHCcXGRI3EjzmW3lD+WULbsACR9BUxXjHSzTl zhVbmJ72806K4ijLr5FuYLzETLL6IF0EcfKzAy3WI14bNE/WlTDDrX1B5lEnrNwghHMv UkKQqtxXd+9ODHZszjE9osB/53spwDJF8kgRh+A2hMA9aVeoOgLNaFyKr9UXZTYVZAz6 jbwFhPoHgWQ8ZQ9qFY9N0hCUzHSwsvWGZQbJYUfCDZ+yRT6eWK5zFRbEwJ5Up/PvLP4m 0Eag== MIME-Version: 1.0 X-Received: by 10.107.136.89 with SMTP id k86mr16407817iod.53.1438542149173; Sun, 02 Aug 2015 12:02:29 -0700 (PDT) Received: by 10.79.7.87 with HTTP; Sun, 2 Aug 2015 12:02:29 -0700 (PDT) Date: Sun, 2 Aug 2015 22:02:29 +0300 Message-ID: Subject: Confused by example in 13.2.2 From: Dmitry Igrishin To: pgsql-docs Content-Type: multipart/alternative; boundary=001a1145a072cbc99f051c58b10f X-Pg-Spam-Score: -2.0 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-docs Precedence: bulk Sender: pgsql-docs-owner@postgresql.org --001a1145a072cbc99f051c58b10f Content-Type: text/plain; charset=UTF-8 Hello, I'm confused a bit by example in 13.2.2: "For example, even a read only transaction at this level may see a control record updated to show that a batch has been completed but not see one of the detail records which is logically part of the batch because it read an earlier revision of the control record." Could anyone clarify this example? And what is "control record"? Thanks. -- // Dmitry. --001a1145a072cbc99f051c58b10f Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Hello,

I'm confused a bit by exampl= e in 13.2.2:
"For example, even a read only transaction at t= his level may see a
control record updated to show that a batch h= as been completed but
not see one of the detail records which is = logically part of the batch
because it read an earlier revision o= f the control record."
Could anyone clarify this= example? And what is "control record"?
Thanks.

--
//= Dmitry.

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