Re: (SETOF) RECORD AS complex_type

On Wed, Dec 27, 2006 at 06:11:55PM -0600, Andrew Dunstan wrote:
> Tom Lane wrote:
> > David Fetter <david@fetter.org> writes:
> >> On Wed, Dec 27, 2006 at 06:22:17PM -0500, Tom Lane wrote:
> >>> The problem with that is that "AS foo" already has a meaning, and it's
> >>> not this one.
> >
> >> How about "AS (foo)" ?
> >
> > What if you want to specify an alias?  This doesn't work:
> >
> >     FROM myverylongfunctionname(...) AS alias(typename)
> >
> > because, again, that syntax already has a meaning.
> >
> > You could possibly do something with a cast:
> >
> >     FROM CAST(myfunc(...) AS typename) [ AS alias ]
> >
> > This is at least syntactically OK.  Not sure what the implementation
> > issues might be.
> >
> 
> 
> For some time now I have wanted to genaralise the use of LIKE in type
> expressions, which might perhaps fit David's need. Something like
> 
>   SELECT * from foo() AS bar (LIKE blurfl);
> 
> The nice thing about this is that you could augment the type expression:
> 
>   SELECT * from foo() AS bar (extra_info text, LIKE blurfl);

That would be really handy.  As with CREATE TABLE, you could pile
together several LIKEs and get whatever you needed :)

Cheers,
D

-- 
David Fetter <david@fetter.org> http://fetter.org/
phone: +1 415 235 3778        AIM: dfetter666                             Skype: davidfetter

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