Re: create or replace rule/view (fwd)

Can someone address Gavin's concern about UpdateAttributeTuples() so we
can get this patch into 7.3?  I know a few people have been asking for
it.


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Gavin Sherry wrote:
> Re-sent.
>
> No one else seems to have received it.
>
> Bruce: copied you in to make sure.
>
> Gavin
>
> ---------- Forwarded message ----------
> Date: Mon, 12 Aug 2002 03:22:08 +1000 (EST)
> From: Gavin Sherry <swm@linuxworld.com.au>
> To: pgsql-patches@postgresql.org
> Subject: create or replace rule/view
>
> Attached is a patch implementing:
>
> create or replace rule ...
> create or replace view ...
>
> It passes all regression tests. There's only one really sketchy part of
> the patch: UpdateAttributeTuples(). This routine is fairly dangerous since
> it simply removes a given relid's pg_attribute entries and creates a new
> set basic on a given TupleDesc. Naturally, it is only useful for views.
>
> It is important to have this functionality so that you can do something
> like:
>
> template1=# create view abc as select 'test'::text as a;
> CREATE VIEW
> template1=# select * from abc;
>   a
> ------
>  test
> (1 row)
>
> template1=# create or replace view abc as select '1'::int2 as a;
> CREATE VIEW
> template1=# select * from abc;
>  a
> ---
>  1
> (1 row)
>
> Regardless, the patch may need some cleaning up. Unfortunately, I don't
> have enough time on my hands over the coming week. Considering beta is
> coming up I thought it best to submit and see what happens.
>
> Gavin

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