Re: Weirdness with

On Mon, Jan 30, 2006 at 04:44:21PM +0800, Christopher Kings-Lynne wrote:
> I had this code in a script:
> 
> UPDATE food_foods SET included=true WHERE verification_status = 'I';
> UPDATE food_foods SET included=false WHERE verification_status IS NULL;
> 
> I tried replacing it with:
> 
> UPDATE food_foods SET included=(verification_status = 'I');

(NULL = 'I')   is null, not false. It will simply set rows where
verification_status is NULL to NULL also.

Perhaps you mean IS NOT DISTNCT FROM or something similar?

Have a nice day,
-- 
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
> tool for doing 5% of the work and then sitting around waiting for someone
> else to do the other 95% so you can sue them.