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iow, list the different customers that ordered the same thing

SELECT * FROM DETAIL A LEFT JOIN DETAIL B ON a.FUNCTION =
b.FUNCTION WHERE a.ID != b.ID

the id is only checked so avoid hitting a match for the record you're on.


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx]On Behalf Of John McKee
Sent: Friday, May 29, 2009 11:30 AM
To: midrange-l@xxxxxxxxxxxx
Subject: Re: Locating Primary records with identical detail records


Think of two customers. They ordered the same merchandise. Master is
customer,
detail is what was ordered. How many times does that happen? That is the
question? This isn't about merchandise, though. Just looking to
identify when
detail for one master is the same as the detail for another master. But,
without knowing a particular Master id.

John McKee

Quoting Charles Wilt <charles.wilt@xxxxxxxxx>:

Ok...so?

That doesn't answer my question.

How can two detail records be the "same" yet "not match".

Are you simply saying the "same" FUNCTION shows up with multiple IDs?
Yet the rest of the fields in the detail can different ("not match")
or can be the same ("match")?

Try describing what you want in English.

Charles

On Fri, May 29, 2009 at 10:37 AM, John McKee <jmmckee@xxxxxxxxxxxxxx> wrote:
An earlier effort, in RPG III, had to work with the limit of an array. Been
years since I attempted this. Point was that I could not fit all the Detail
record FUNCTIONS into a record for sorting. Likely, the size limit has been
eased over the years. But, a record length of 10000 just to accommodate all
possibilities seemed a bit excessive.

John McKee

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