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Inserting data in a table using sub-selects

From: Andreas Joseph Krogh <andreak(at)officenet(dot)no>
To: pgsql-sql(at)postgresql(dot)org
Subject: Inserting data in a table using sub-selects
Date: 2004-03-10 19:52:21
Message-ID: 200403102052.21825.andreak@officenet.no (view raw or flat)
Thread:
Lists: pgsql-sql
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Hi, I'd like to fill one table with the contents of another table. Mye schema 
is like this:

CREATE TABLE table1(
id serial NOT NULL PRIMARY KEY,
title varchar NOT NULL,
description varchar
);

CREATE TABLE table2(
id int NOT NULL REFERENCES(table1(id) ON DELETE CASCADE,
content varchar NOT NULL
);

Now - is there a way I can do something like:
INSERT INTO table2(id, content) values (select t1.id, coalesce(t1.title, '') 
|| ' ' || coalesce(t1.description, '') as content from table1 t1);

Any hints on how to insert a lot of values at the same time like this?

- -- 
Andreas Joseph Krogh <andreak(at)officenet(dot)no>
Managing Director, Senior Software Developer
OfficeNet AS

I always do a CVS update before making a patch (unless I forget).

gpg public_key: http://dev.officenet.no/~andreak/public_key.asc
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