Re: Verifying a one-to-one relationship between two fields -- MIDRANGE-L

Subject: Re: Verifying a one-to-one relationship between two fields
From: "James H. H. Lampert" <jamesl@xxxxxxxxxxxxxxxxx>
Date: Fri, 19 Aug 2022 16:57:37 -0700
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On 8/19/22 4:28 PM, Roger Harman wrote:

select distinct CUSKEY, CUSCOD, count(*)
from YourPF
group by CUSKEY, CUSCOD
having count(*) > 1

No, that just finds cases where the any given pair occurs more than once.

I'm attempting to verify that, for example, if there is at least one record in which CUSKEY='123' and CUSCOD = 'FOO', then all records with CUSKEY='123' have CUSCOD='FOO', and all records with CUSCOD='FOO' have CUSKEY='123'.

--
JHHL

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