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Re: constraint upon view

From: Jonathan Gardner <jgardner(at)jonathangardner(dot)net>
To: Pierre Emmanuel Gros <Pierre-Emmanuel(dot)Gros(at)limsi(dot)fr>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: constraint upon view
Date: 2004-06-02 20:28:46
Message-ID: 200406021328.46902.jgardner@jonathangardner.net (view raw or flat)
Thread:
Lists: pgsql-hackers
On Monday 31 May 2004 06:38 am, Pierre Emmanuel Gros wrote:
> Hi,
> I would like to know if i can add constraint and typed column upon a
> create view sentence.
> something like create view toto (a INTEGER primary key , b VARCHAR) as
> select .....
> If it is not possible , what to have to change in the backend sources to
> obtain the result ???
>

I don't think you want a view in this case. When you select against a view, 
the view is unrolled into the statement that forms it. Try a look at the 
results of "EXPLAIN ANALYZE" when you are selecting against a view.

-- 
Jonathan Gardner
jgardner(at)jonathangardner(dot)net

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