MIDRANGE dot COM Mailing List Archive



Home » MIDRANGE-L » September 2001

RE: Elementary SQL question



fixed

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?







Return to Archive home page | Return to MIDRANGE.COM home page

This mailing list archive is Copyright 1997-2014 by MIDRANGE dot COM and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available here. If you have questions about this, please contact