Re: Rules and Views

From: Curt Sampson <cjs(at)cynic(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Rules and Views
Date: 2002-07-31 04:40:21
Message-ID: Pine.NEB.4.44.0207311337000.493-100000@angelic.cynic.net
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On Tue, 30 Jul 2002, Tom Lane wrote:

> Curt Sampson <cjs(at)cynic(dot)net> writes:
> > CREATE VIEW test AS ...
> > CREATE RULE test_insert AS
> > ON INSERT TO test
> > DO ...
> > INSERT INTO test VALUES (1, 'one', 'onemore');
> > ERROR: Cannot insert into a view without an appropriate rule
>
> > What am I doing wrong here? Is there a bug?
>
> Make that "ON INSERT DO INSTEAD". As coded, the rule leaves the
> original insertion into the view still active.

Ah, I see! My model of how this was working was wrong.

> Perhaps the error message could be phrased better --- any thoughts?

Maybe a message that says something along the lines of "cannot insert
into views; you need to override this behaviour with a rule"? Also, some
examples in the manual would be helpful.

cjs
--
Curt Sampson <cjs(at)cynic(dot)net> +81 90 7737 2974 http://www.netbsd.org
Don't you know, in this new Dark Age, we're all light. --XTC

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