The Hermit Hacker <scrappy(at)hub(dot)org> writes:
>> Uh, why don't you just GROUP BY and ORDER BY stat_period?
> Okay, maybe I'm misunderstanding GROUP BY, but my understanding is that it
> groups "like" values ... my above example would give me a count of all
> impressions received over a one hour period ...
Oh, so "stat_period" is not a period label but an exact timestamp,
and you want to group into hourly blocks? OK, then group/order by
date_trunc("hour", stat_period) is probably what you want...
I'd suggest choosing another name for the field, too ;-)
regards, tom lane