ciapecki wrote:

> BTW. how can you index only N's for example?
>
> chris

With a function based index. Go to Morgan's Library at www.psoug.org
and scroll down to "Function Based Indexes."
--
Daniel A. Morgan
University of Washington
damorgan@x.washington.edu (replace x with u to respond)
Puget Sound Oracle Users Group
www.psoug.org