Message-Id: <l03130308b38d70ee3be5@[147.233.159.109]>
In-Reply-To: <3.0.5.32.19990616100100.007ac9a0@mindspring.com>
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Date: Wed, 16 Jun 1999 18:19:54 +0300
To: Bob Kruger <bkruger@mindspring.com>, pgsql-sql@postgreSQL.org
From: Herouth Maoz <herouth@oumail.openu.ac.il>
Subject: Re: [SQL] Query Question

At 18:01 +0300 on 16/06/1999, Bob Kruger wrote:


>
> Here is a simple query question that has me stumped.
>
> I have a database that contains the information on vehicle maintenance
> costs.  When a repair is done to a vehicle, the tag number and the amount
> of the repair is recorded.
>
> table structure runs as follows:
>
> id		serial
> po		varchar(12)
> veh_no		varchar(8)
> cost		real
> comments	varchar(30)
>
> I would like to be able to do a query in which I can list all of the
> vehicles and a totalization of the costs, e.g. list one vehicle number, and
> the sum of costs for that vehicle.  Because there are numerous entries for
> each vehicle I know that some part of the query will have to include
> "distinct veh_no" so that only one output for each vehicle is listed.

Do you mean

SELECT veh_no, sum( cost )
FROM the_table
GROUP BY veh_no;

Herouth

--
Herouth Maoz, Internet developer.
Open University of Israel - Telem project
http://telem.openu.ac.il/~herutma