On Mon, 14 May 2007 19:15:11 +0800, subtenante
<zzsubtenantezz@gmail.com> wrote:

>I don't have much experience but if my voice counts, let the NULLs be

Thinking twice myself, avoid the NULLs and put a default value instead
(0 in general, I guess). NULL imply you are in a three-valued logic
and the results of queries might not always be what they obviously
should be.