Date: Mon, 14 Mar 2005 10:02:08 +0100
To: bernard@bgsoftfactory.com, pgsql-sql@postgresql.org
Subject: Re: Newbie wonder...
References: <1mmif8pua8zxb.q7qw4hme6jk5.dlg@40tude.net>
From: PFC <lists@boutiquenumerique.com>
Organization: =?iso-8859-15?Q?La_Boutique_Num=E9rique?=
Content-Type: text/plain; format=flowed; delsp=yes; charset=iso-8859-15
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Message-ID: <opsnmd1uimth1vuj@localhost>
In-Reply-To: <1mmif8pua8zxb.q7qw4hme6jk5.dlg@40tude.net>
User-Agent: Opera M2/7.54 (Linux, build 955)


	If you want to add a SERIAL field to an existing table, create a sequence  
and then create an integer field with default nextval(seq) and postgres  
will fill it automatically. The order in which it will fill it is not  
guaranteed though !

	However, you might also like to de-dupe your data once it's in the  
additional tables, thus you might need more complicated measures.


> (2) How should I go to create a sequence for an existing table? For all
> futures data entry, after this conversion, I want the unique ID for each
> row to come from a sequence, but if I know how to create a table using
> serial, I am not sure how to modify one for this.
>
> Thanks,
> Bernard
>
> ---------------------------(end of broadcast)---------------------------
> TIP 6: Have you searched our list archives?
>
>                http://archives.postgresql.org
>