Re: problem with foreign keys + data-only backup

From: Richard Huxton <dev(at)archonet(dot)com>
To: Peter Billen <peter(at)clueless(dot)be>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: problem with foreign keys + data-only backup
Date: 2008-08-22 13:28:43
Message-ID: 48AEBF0B.2030200@archonet.com
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Peter Billen wrote:
> Hi all,
>
> I have a problem with foreign keys and data-only (no schema) backup. I
> have a simple table node (pseudo-SQL):

> When I do a data-only backup, the backup file contains following two lines:
>
> INSERT INTO NODE (node_id, parent_node_id) VALUES (2, 1);
> INSERT INTO NODE (node_id, parent_node_id) VALUES (1, NULL);
>
> Restoring the backup file into another database ofcourse fails, because
> the parent_node_id (1) in the first INSERT statement refers to an
> unknown (to be added) node (in the second statement).
>
> How do I make sure my backup orders the insert statements in a logical
> order?

You don't. You might find --disable-triggers useful though. See the
pg_restore documentation for details.

--
Richard Huxton
Archonet Ltd

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