>If you need to use multiple columns tableB, you would need multiple
>subqueries on tableB - which is V E R Y slow.

I do not agree with that. There was even a thread somedays ago started
by me about the speed of subqueries. Actually using subqueries in our
case was M U C H faster than using joins.

I can not understand why is this happening.

--
Best regards,
Alexander mailto:saho@...