From: Rodrigo De León <rdeleonp@gmail.com>
To: Luiz K. Matsumura <luiz@planit.com.br>
Cc: pgsql-sql@postgresql.org
Subject: Re: Aggregate question (Sum)
Date: Mon, 19 Nov 2007 16:11:39 -0500
Message-ID: <a55915760711191311s115535d5ofe9d0ebb99714b9b@mail.gmail.com> (raw)
In-Reply-To: <4741F63A.6070500@planit.com.br>
References: <4741F63A.6070500@planit.com.br>
On Nov 19, 2007 3:46 PM, Luiz K. Matsumura <luiz@planit.com.br> wrote:
> If someone can give me some hint I will apreciate.
This is more of a normalization problem. See:
http://www.deeptraining.com/litwin/dbdesign/FundamentalsOfRelationalDatabaseDesign.aspx
and lookup Third Normal Form.
You have a calculated total for each order, so I assume there's a
price for every product. You should join order_item to whichever table
has the individual cost for each product and multiply it by
order_item.qty.
Good luck.
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To: pgsql-sql@postgresql.org
Cc: rdeleonp@gmail.com, luiz@planit.com.br
Subject: Re: Aggregate question (Sum)
In-Reply-To: <a55915760711191311s115535d5ofe9d0ebb99714b9b@mail.gmail.com>
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