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: So what's null then if it's not nothing?

Re: So what's null then if it's not nothing?

From: <michael_at_preece.net>
Date: 17 Nov 2005 18:20:50 -0800
Message-ID: <1132280450.620076.17440@g49g2000cwa.googlegroups.com>


Rats! I just read that the ANSI standard says NULL is char(0)! That's probably why some Pick/MV implementations use char(0) as an end-of-record marker - becuase that fits more with what the ANSI standard goes on to say about NULL-terminated fields. So SQL is wrong (confuses NULL (nothing) with UNKNOWN (maybe NULL, maybe something else)) and ANSI is wrong too (char(0) is not nothing)! Phew - thank God for Pick!

Mike. Received on Thu Nov 17 2005 - 20:20:50 CST

Original text of this message

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