Re: 7.4 Wishlist

Magnus Naeslund(f) wrote:
> Good!
> Now convert this query so that it only evaluates the date_part thing
> ONCE:
>
> select t.id, date_part('days',now()-t.stamp) from table_name t where
> date_part('days',now()-t.stamp) > 20;
>
> I hope you all are kidding me in not seeing the real issue i'm trying to
> show here.
>
> Cheers
> Magnus
>
>
>

Does this work?

SELECT t.id, x.date_part
FROM table_name t, (select date_part('days',now()-t.stamp)) as x
WHERE x.date_part > 20;

--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073