Re: 7.4 Wishlist

Bruce Momjian <pgman@candle.pha.pa.us>

From: Bruce Momjian <pgman@candle.pha.pa.us>
To: "Magnus Naeslund(f)" <mag@fbab.net>
Cc: pgsql-hackers@postgresql.org
Date: 2002-12-03T05:27:03Z
Lists: pgsql-hackers, pgsql-general
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;

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