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.
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