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comparing n records

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I have a system that logs radio frequencies.

For each frequency I need to compare with all other frequencies and all results of calculations.

The calcultaions are achieved using 2 frequencies;

Therefore f1(frequency 1) needs to be compared with f2, f3, ... fn and have all 4 calculations performed f1 vs f2, f3 ... fn and the results of which compared against f1,f2,f3 ... fn

I am trying to achieve this through relatoinships alone, but see how to without a relationship for every frequency

Any ideas?

Many thanks

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