Tom.Thomson (9/10/2010)
...The rest of this comment is a [n ex-] mathematical logician's take on Codd's work on having two sorts of NULL. Don't read it if you want to stick in the ...
In databases with more than one type of NULL this can get quite messy: if we look at Codd's NULL-i and NULL-a, we find one version ...
Heh, he. You said Null-A, ha.(*) 😛
(* - obscure A. E. Van Vogt reference...)
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