"David E. Wheeler" <[email protected]> writes:
> On Sep 8, 2009, at 9:57 AM, Tom Lane wrote:
>> Intentionally so, because there's not a whole lot you can *do* with an
>> ANY parameter, other than checking it for null. Perhaps the real
>> question is about what semantics you're expecting for these
>> unconstrained parameters.
> For my purposes, I guess implicit casting for comparing values, as in
> arg_a IS DISTINCT FROM arg_b
Surely you'd want arg_a and arg_b constrained to the same type,
otherwise there is no certainty that that means anything at all.
regards, tom lane
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