From: Kretschmer Andreas <andreas_kretschmer@despammed.com>
To: pgsql-sql@postgresql.org
Subject: Question about a select
Date: Sat, 22 Jan 2005 16:56:11 +0100
Message-ID: <20050122155611.GA6592@kaufbach.delug.de> (raw)
Hi,
I have a table with this columns: machine, date and area.
Now i need a view with machine an week, calculated from date, and
sum(area), where date between CURRENT_DATE and now+N days.
Okay, this is not the problem, it works fine.
(the original table and the view is more complex)
The problem is, i need also rows for machine and week with no entrys in
the table. For this rows the sum(area) shold be NULL ore 0.
In other words: for every machine i need M rows, and M must be constant.
Regards & Thx, Andreas
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To: pgsql-sql@postgresql.org
Cc: andreas_kretschmer@despammed.com
Subject: Re: Question about a select
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