Elementary SQL question -- MIDRANGE-L

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Subject: Elementary SQL question
From: Matthias Oertli <oertlim@xxxxxxxxxxxxxxxx>
Date: Fri, 21 Sep 2001 16:06:56 +1000
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Organization: MDI Group

Hi,

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?

Best regards,
Matthias

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Follow-Ups:

RE: Elementary SQL question , Joe Pluta
Re: Elementary SQL question , Matthias Oertli
RE: Elementary SQL question , Rolf Mittag

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