Oracle FAQ Your Portal to the Oracle Knowledge Grid
HOME | ASK QUESTION | ADD INFO | SEARCH | E-MAIL US
 

Home -> Community -> Usenet -> comp.databases.theory -> Re: 3 value logic. Why is SQL so special?

Re: 3 value logic. Why is SQL so special?

From: David Cressey <dcressey_at_verizon.net>
Date: Mon, 18 Sep 2006 20:22:55 GMT
Message-ID: <zeDPg.797$I.207@trndny05> 






"Volker Hetzer" <firstname.lastname_at_ieee.org> wrote in message
news:eemdi3$1t3$1_at_nntp.fujitsu-siemens.com...



> What am I missing?





> Btw, what would be the consequences of NULL=NULL being true?



NULL=NULL should not be true.
NULL=NULL should not be false.
NULL=NULL should not be UNKNOWN.
NULL=NULL should be NULL.


Received on Mon Sep 18 2006 - 15:22:55 CDT












Original text of this message













  HOME |
  ASK QUESTION |
  ADD INFO |
  SEARCH |
  E-MAIL US