You need count(*) of the transaction file divided by count(*) of the
customer master. I can't see any way of doing that in one statement.
Joe
> From: Matthias Oertli
>
> Given a customer master file (one record per customer) and a transaction
> file (one record per transaction, one customer can have many
> transactions), how would it be possible to find the average number of
> transactions per customer with one single SQL statement?
