Thank you Jeff.

Might I suggest another, old school, alternative that seems to run a little bit faster, which uses a sub-query to eliminate those customers who all ready purchased item "C".

Although CPU...

Ironically, I have continued working on the issue and made a couple of tweeks and got it to work. But to answer you question my original code was:

INSERT INTO...

Please excuse me, but I meant to mention that I am trying to do this from a stored procedure. This is to be part of web application where the...