Yes - I am a complete idiot:
The query is indeed completely wrong, it should be current_timestamp
not current_time. I finaly figured this out after staring at the
screen for twenty minutes trying to figure out what was going wrong.
DOH!
Alex Turner
NetEconomist
On Wed, 02 Feb 2005 16:14:58 -0500, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Alex Turner <armtuk@gmail.com> writes:
> > -> Seq Scan on weblog_entry (cost=0.00..940.85 rows=4452 width=40)
> > Filter: ((request_time)::text > ((('now'::text)::time(6) with
> > time zone - '00:01:00'::interval))::text)
>
> > This explain plain seems to me to be saying that it's casting the
> > timestamp to a text type before comparing with my
> > current_time-interval.
>
> Yup.
>
> > Is this the right behaviour?
>
> Hard to say. You did not say what the datatype of request_time is.
>
> The whole thing looks a bit bogus though --- isn't it going to fail near
> midnight due to wraparound? Seems like you should be using timestamps
> not times of day.
>
> regards, tom lane
>
>