On Sep 9, 2009, at 10:17 AM, Tom Lane wrote:
Well, none, *if* it's defined to have exactly the same runtime
behavior
as anyelement does. It sounded like you were arguing for something
looser. We could certainly define it as being just like anyelement
but not constrained to match any other argument or result (and, hence,
not usable as a result type).
Yes, that sounds about right. Is that not basically what Alvaro was
looking for to start with? And is there an "any" array that could work
for variadic functions like sprintf(), as well?
Best,
David
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