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);
cheers
andrew
