Peter Eisentraut <peter_e(at)gmx(dot)net> writes:
> Bryce Nesbitt wrote:
>> They occur in fine time. That's good, thanks. But jeeze, can't
>> postgres figure this out for itself?
> I'm sure you wouldn't appreciate it if PostgreSQL did a full table scan
> before each query to figure out the total size of the involved tables.
It's also less than polite to complain about the behavior of
two-year-old releases, without making any effort to ascertain
whether more-current versions are smarter.
regards, tom lane