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Message Posted: Fri, 29 Jan 2004 @ 20:47:40 GMT


     
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Subj:   Re: Null values in queries
 
From:   McCall, Glenn D

If you wish to include the NULL's, you have to explicitly request them. As in

where fieldval != 'P' or fieldval is null


As the other responders have mentioned null is something that is unknown.It could be that the fieldval of NULL actually is a 'P' but this is not know.

Indeed NULL doesn't equal or not equal anything. Any comparison with NULL will always return false (except the "IS NULL" and "IS NOT NULL" tests).



     
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