On 14 May 2007 04:58:47 -0700, Lo'oris <looris@gmail.com> wrote:

>hey nice idea. but. i kinda expected NULLs improved performance over
>values such as 0, don't they?
>well, having a slightly worst performance is anyway better than having
>bugs you can't find, isn't it?
>i'll consider this, thanks

I'm not sure it makes better performance to have NULLs. They add 1 bit
to every field that can take a NULL value, and they don't make
searches faster as far as I know.