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From: Scott Ribe <scott_ribe@elevated-dev.com>
To: Thorsten Schöning <tschoening@am-soft.de>
Cc: pgsql-admin@lists.postgresql.org
Subject: Re: What's the dfifference between pg_start_backup+copy+pg_stop_backup+WAL vs. pg_start_backup+pg_stop_backup+copy+WAL?
Date: Fri, 23 Jul 2021 12:07:47 -0600
Message-ID: <6780C96C-3016-47C8-AD06-BF860283266C@elevated-dev.com> (raw)
In-Reply-To: <562203777.20210723194435@am-soft.de>
References: <1208702063.20210723115638@am-soft.de>
	<399c734c5b9ffe10f68bcb79a69bea000d8d0c21.camel@cybertec.at>
	<1751752722.20210723161202@am-soft.de>
	<20210723152418.GK20766@tamriel.snowman.net>
	<562203777.20210723194435@am-soft.de>

> On Jul 23, 2021, at 11:44 AM, Thorsten Schöning <tschoening@am-soft.de> wrote:
> 
> So why is that row used at all instead of simply ignored?

Because it is in the file. WAL can re-do changes, it cannot undo them.







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