Just an aside (apologies for the off topic bits).

I remember the problem with this procedure Paul and also remember the lock-down policy that prevented us from getting to useful resources...

Don't even ask ...

I've just started in...

Wow!

Thanks for all the comments, much of what everyone has said has confirmed my suspicions. Basically I'm going to try a few tests with some large tables and see if...

Thanks again.

I had already read most of those excellent articles, but forgotten that I had :hehe:. I've now re-read them fully.

A.

I feared this may be the case.

:satisfied:

Thanks for the help.