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: Implementation of boolean types.

Re: Implementation of boolean types.

From: Jonathan Leffler <jleffler_at_earthlink.net>
Date: Thu, 14 Jul 2005 05:50:05 GMT
Message-ID: <h2nBe.4816$BK1.4298@newsread3.news.pas.earthlink.net> 





-CELKO- wrote:


> SQL deliberately left out Booleans [...]




SQL-1999 and SQL-2003 both have a BOOLEAN type, with recognized values 
TRUE, FALSE and UNKNOWN.  I'm not clear whether NULL is equivalent to 
UNKNOWN or not; I've not scrutinized the weasel-words carefully enough.


-- 
Jonathan Leffler                   #include <disclaimer.h>
Email: jleffler_at_earthlink.net, jleffler_at_us.ibm.com
Guardian of DBD::Informix v2005.01 -- http://dbi.perl.org/


Received on Thu Jul 14 2005 - 00:50:05 CDT












Original text of this message













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