Jeremy Finzel <finzelj(at)gmail(dot)com> writes:
> It appears that neither pg_get_function_arguments
> nor pg_get_function_identity_arguments could be used for this. I want to
> get function argument data types from the catalog by ordinal position,
> without the argument name.
Something involving pg_proc.proargtypes::regtype[] might be useful.
regards, tom lane