Re: 7.4 Wishlist - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: 7.4 Wishlist
Date
Msg-id 200212030527.gB35R4o22434@candle.pha.pa.us
Whole thread Raw
In response to Re: 7.4 Wishlist  ("Magnus Naeslund(f)" <mag@fbab.net>)
Responses Re: 7.4 Wishlist
List pgsql-hackers
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 xWHERE x.date_part > 20;

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
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