On Sat, Jan 23, 2010 at 5:53 PM, Ivan Sergio Borgonovo
<mail(at)webthatworks(dot)it> wrote:
> That confused me further since it seems a 3rd technique to return
> set of records.
>
The heapfuncs.c example uses get_call_result_type() to get the
tupledesc and calls heap_form_tuple() to construct the return value,
just like the docs describe. The extra code is because it's a
set-returning-function which has its own set of tricky things to do.
--
greg