Date: Tue, 6 Jan 2015 18:44:37 +0100
From: Andreas Kretschmer <akretschmer@spamfence.net>
To: pgsql-sql@postgresql.org
Subject: Re: Add new field with auto-icrement to existing table
Message-ID: <20150106174437.GA24259@tux>
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Brice André <brice@famille-andre.be> wrote:

> But now, I would want to develop a server-based application. And this
> application would need a single column unique ID for referencing tables
> entries. My current primary key does not fit my needs as it is based on two
> columns. So, I would want to add a new field on all derived tables. And, as I
> don't want to change the synchronisation stuff, the values of this new field
> should be assigned automatically.

Create a new Sequence. I think, that should fit your requirement.

Andreas
-- 
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unintentional side effect.                              (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly."   (unknown)
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