Re: Mass Import/Generate PKs

From: "Ed L(dot)" <pgsql(at)bluepolka(dot)net>
To: Franco Bruno Borghesi <franco(at)akyasociados(dot)com(dot)ar>, Hunter Hillegas <lists(at)lastonepicked(dot)com>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>, PostgreSQL <pgsql-general(at)postgresql(dot)org>
Subject: Re: Mass Import/Generate PKs
Date: 2004-11-06 21:56:03
Message-ID: 200411061456.03458.pgsql@bluepolka.net
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On Saturday November 6 2004 2:13, Franco Bruno Borghesi wrote:
> the simplest way to do it seems to be adding a SERIAL column to your
> table, and then adding a primary key constraint:
>
> 1)insert data into table
> 2)ALTER TABLE <table> ADD id SERIAL;
> 3)ALTER TABLE <table> ADD CONSTRAINT <table>_pk PRIMARY KEY (id);

You may also need to populate the id column with unique values in between
these two steps with something like "

update table set id = nextval('table_id_seq'::text) where id isnull"

I don't think SERIAL does that for you.

Ed

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