From: | Bruno Wolff III <bruno(at)wolff(dot)to> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: row numbering |
Date: | 2005-03-11 14:48:30 |
Message-ID: | 20050311144830.GA29934@wolff.to |
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Thread: | |
Lists: | pgsql-general |
On Thu, Mar 10, 2005 at 13:22:05 +0100,
Karsten Hilbert <Karsten(dot)Hilbert(at)gmx(dot)net> wrote:
>
> Also notice that we do have views that display the missing
> shots per schedule per patient. I just have not found a way to
> join the two views (that is, given and missing) because that
> would AFAICT require the output "row numbering".
If you have a view of patients shots and a view of patients missing shots,
the way to connect them is with a union. You can then group or order
the union to display data about a patient in one place.
Another approach would to cross join the patients with the required shots
and then left join that result with the shots patients have had.
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