Bruce Momjian <bruce@momjian.us> writes:
> Tom Lane wrote:
>> Has anyone bothered to measure the overhead added by having to mask to
>> fetch or store the natts value? This is not a zero-cost improvement.
> Tom, how should this be tested? I assume some loop of the same query
> over and over again.
I'd be satisfied by a demonstration of no meaningful difference in
pgbench numbers.
It's *probably* not a problem, but you never know if you don't check...
regards, tom lane