On Tuesday 23 October 2001 16:56 pm, Bart Lateur wrote: > On Tue, 23 Oct 2001 12:35:57 -0500, Stephen Clouse wrote: > > >This is not Oracle, but ANSI-standard behavior. NULL represents the absence or > >non-existence of a value. A non-existent value cannot be equal to anything. So > >this is the correct behavior. I personally don't think DBI should muck with > >proper behavior. > > My personal opinion is to disagree. To me, NULL means "empty". It is not > the same as a zero length string. But empty is empty, thus NULL=NULL. > > Nitpicking that NULL != NULL, is only making our life harder. > > Last week, there was a similar discussion going on, on the Perl6 mailing > lists, with regards to NaN (Not A Number). Is NaN==Nan, or NaN!=NaN?
Bruce Momjian spends a couple of paragraphs in the elephant book explaining why NULL doesn't equal anything, including NULL. NULL is not NaN, NULL is undefined. -- Bud Rogers <[EMAIL PROTECTED]> They have awakened a sleeping giant and filled him with a terrible resolve.
