Hi,
> A tuple wouldn't be unusual, but you're not asking for a
> simple tuple here. What you're asking for is a value and a
> set of tuples.
Which is in itself a tuple! This discussion is again veering slightly
off-topic, but note that tuples as mathematical objects do not have such
arbitrary limitations.
> And what's worse, after the first returned tuple you only
> seem to want the users value, without the total value. I
> don't know of any language that can do that and I'm pretty
> sure the languages you mentioned can't do that either. It
> makes parsing the return values unnecessary difficult, I bet
> that's a compelling enough reason that nobody seems to have
> implemented it.
Again, you're making it sound like I'm requesting something exotic,
while any language with a modern type system allows this and much
more without blinking. In Ocaml, for example, the return type 'page_t'
of my function could be defined as follows:
type user_t = { uid: int; name: string; age: int; }
type page_t = int * user_t list
('user_'t is declared as a record with fields 'uid', 'name', and 'age';
'page_t' is defined as a tuple consisting of an integer and a list of
'user_t').
Moreover, we've already established that PL/pgSQL also allows the return
of a tuple consisting of an integer and an array of tuples. All I wanted
was to change the latter portion into SETOF tuples...
Best regards,
Jon
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