I'm not an MS SQL Guy, but 15+ years in Oracle. Null (in Oracle) essentially means 'I don't know the value'. I.e - If I have 2 values, A and B. If A and B are both 0, then I know that A=0 and B=0, therefore A=B If either A or B is null, I can say A=0, B=null or 'I don't know the value of B'. Therefore, I cannot say that A=B, so I must assume that A <> B. Works for both null is well. If I don't know the values for A and B, how can I know they are the same?
________________________________ From: Action Request System discussion list(ARSList) [mailto:[EMAIL PROTECTED] On Behalf Of Guillaume Rheault Sent: Friday, June 15, 2007 11:16 AM To: arslist@ARSLIST.ORG Subject: Re: $NULL$ != $NULL$ ** Tab, Actually null means literally zero in German. The spelling in French is nul (one L) Guillaume ________________________________ From: Tab Merkel Sent: Thu 06/14/07 3:48 PM To: arslist@ARSLIST.ORG Subject: Re: $NULL$ != $NULL$ Actually its deeper than SQL...Not so much an SQL thing... The root (French) meaning of NULL is: not any Which means NULL != anything. And anything includes NULL. Quoting Warren Baltimore <[EMAIL PROTECTED]>: > I'm not really sure about this, but I think this is actually how SQL handles > null=null...Not so much a Remedy thing... > > Any SQL gurus out there care to explain this one? > > > On 6/14/07, Opela, Gary L Contr OC-ALC/ITMA <[EMAIL PROTECTED]> > wrote: >> >> ** >> >> What they will say is that they have fixed a bug, not that they've broken >> your code. >> >> >> >> I have run into this in the past, where I had to write remedy >> functionality designed around, or using their bugs, then they fix it and >> break the functionality. Some bugs, I guess, are just best left in the >> product. >> >> >> ------------------------------ >> >> *From:* Action Request System discussion list(ARSList) [mailto: >> [EMAIL PROTECTED] *On Behalf Of *Kaiser Norm E CIV USAF 96 CS/SCCE >> *Sent:* Thursday, June 14, 2007 8:26 AM >> *To:* arslist@ARSLIST.ORG >> *Subject:* Re: $NULL$ != $NULL$ >> >> >> >> So any code written for 5.1.2 now may have defects in it that are >> introduced simply by upgrading. >> >> >> ------------------------------ >> >> *From:* Action Request System discussion list(ARSList) [mailto: >> [EMAIL PROTECTED] *On Behalf Of *Warren Baltimore >> *Sent:* Wednesday, June 13, 2007 4:02 PM >> *To:* arslist@ARSLIST.ORG >> *Subject:* Re: $NULL$ != $NULL$ >> >> >> >> ** Nope Norm, I don't think your crazy! I believe your on the money. >> >> On 6/13/07, *Kaiser Norm E CIV USAF 96 CS/SCCE* <[EMAIL PROTECTED]> >> wrote: >> >> ** >> >> I may be crazy, but I seem to recall from the dark recesses of my mind >> that when comparing values, if two values are $NULL$, the expression would >> evaluate to FALSE. That's the way it seemed to work at least up to v5.1.2 >> . >> >> >> >> For example, suppose I have form A and form B and I do a PUSH FIELDS from >> A to B if field1on A is equal to field2 on B. As I recall-and I'm pretty >> certain this is true-if field1 is NULL and field2 is NULL, the PUSH FIELDS >> qualification fails because it evaluates to FALSE. >> >> >> >> It seems with version 6.3 (and higher?) this type of expression now >> evaluates to TRUE??? >> >> >> >> Am I crazy? >> >> __20060125_______________________This posting was submitted with HTML in >> it___ >> >> >> >> >> -- >> Warren R. Baltimore II >> Remedy Developer >> UW Medicine IT Services >> School of Medicine >> University of Washington >> Box 358220 >> 1325 Fourth Ave, Suite 2000 >> Seattle, WA 98101 >> >> The opinions expressed in this e-mail are in no way those of the >> University of Washington, or the State of Washington. They are my own. >> __20060125_______________________This posting was submitted with HTML in >> it___ >> __20060125_______________________This posting was submitted with HTML in >> it___ __20060125_______________________This posting was submitted with HTML >> in it___ > > > > > -- > Warren R. Baltimore II > Remedy Developer > UW Medicine IT Services > School of Medicine > University of Washington > Box 358220 > 1325 Fourth Ave, Suite 2000 > Seattle, WA 98101 > > The opinions expressed in this e-mail are in no way those of the University > of Washington, or the State of Washington. They are my own. > > ________________________________________________________________________ _______ > UNSUBSCRIBE or access ARSlist Archives at www.arslist.org > ARSlist:"Where the Answers Are" ________________________________________________________________________ _______ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:"Where the Answers Are" __20060125_______________________This posting was submitted with HTML in it___ _______________________________________________________________________________ UNSUBSCRIBE or access ARSlist Archives at www.arslist.org ARSlist:"Where the Answers Are"
