From: Joost Kraaijeveld <J.Kraaijeveld@Askesis.nl>
To: Frank van Vugt <ftm.van.vugt@foxi.nl>
Cc: Pgsql-sql@postgresql.org <Pgsql-sql@postgresql.org>
Subject: Re: Help with simple SQL query?
Date: Wed, 05 Oct 2005 15:19:40 +0200
Message-ID: <1128518380.3655.226.camel@Panoramix> (raw)
In-Reply-To: <200510051421.56840.ftm.van.vugt@foxi.nl>
References: <71E37EF6B7DCC1499CEA0316A2568328024BBA0B@loki.wc.globexplorer.net>
<200510051421.56840.ftm.van.vugt@foxi.nl>
On Wed, 2005-10-05 at 14:21 +0200, Frank van Vugt wrote:
> Hi Joost,
>
> Try joining and comparing the order table with/to an aggregated orderline
> table, something like this:
>
> select order_id, order_price, sum_price, order_price - sum_price as diff
> from order, (select parent_order_id, sum(orderline_price) as sum_price
> from orderline group by parent_order_id) as foo
> where order_id = parent_order_id
> and order_price != sum_price
>
>
> This should prove to be as efficient as it gets ;)
How nice. An answer between the questions. And a working anser!. Which
manual did I miss ;-)
Thanks.
--
Groeten,
Joost Kraaijeveld
Askesis B.V.
Molukkenstraat 14
6524NB Nijmegen
tel: 024-3888063 / 06-51855277
fax: 024-3608416
e-mail: J.Kraaijeveld@Askesis.nl
web: www.askesis.nl
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To: pgsql-sql@postgresql.org
Cc: J.Kraaijeveld@Askesis.nl, ftm.van.vugt@foxi.nl
Subject: Re: Help with simple SQL query?
In-Reply-To: <1128518380.3655.226.camel@Panoramix>
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