From: Thomas Pundt <mlists@rp-online.de>
To: pgsql-sql@postgresql.org, "Joost Kraaijeveld" <J.Kraaijeveld@askesis.nl>
Subject: Re: How to add column from old_table to new_table?
Date: Wed, 21 Sep 2005 14:58:15 +0200
Message-ID: <200509211458.15281.mlists@rp-online.de> (raw)
In-Reply-To: <1127306186.20038.21.camel@Panoramix>
References: <1127306186.20038.21.camel@Panoramix>
Hi,
On Wednesday 21 September 2005 14:36, Joost Kraaijeveld wrote:
| Is that possible in a SQL script (pgadmin or psql console?) and if so,
| what is the syntax in this example?
funny that you mention pgadmin :-)
| insert into new_table(new_attribute)
| value( select old_attribute from old_table, new_table where old_table.id
| = new_table_id)
| where new_table.id = old_table.id
from the pgadmin help system (reference|sql commands|insert):
INSERT INTO table [ ( column [, ...] ) ]
{ DEFAULT VALUES | VALUES ( { expression | DEFAULT } [, ...] ) | query }
and some lines further an example:
This example inserts some rows into table films from a table tmp_films with
the same column layout as films:
INSERT INTO films SELECT * FROM tmp_films WHERE date_prod < '2004-05-07';
Or - if I was misunderstanding your question and you simply want to update
already existing rows in "new_table", you might try
UPDATE new_table
SET new_attribute = old_table.old_attribute
FROM old_table
WHERE new_table.id = old_table.id;
Ciao,
Thomas
--
Thomas Pundt <thomas.pundt@rp-online.de> ---- http://rp-online.de/ ----
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To: pgsql-sql@postgresql.org
Cc: mlists@rp-online.de, J.Kraaijeveld@askesis.nl
Subject: Re: How to add column from old_table to new_table?
In-Reply-To: <200509211458.15281.mlists@rp-online.de>
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