AWK - keys with multiple values

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Author

keys with multiple values

Robert Katz

2005-05-26, 3:55 am

I have two files, A, B, with the following structure:

The key is $2. The value of the key is the rest of the record.
So keys can have multiple values. Disregard duplicate key-value pairs,
i.e. consider unique lines only. I need to print out all key-value
pairs that belong to one file, but not to the other. So I need something like
this.
___________________
key A B
=== === ===
k1 A_11 B_11
A_21 B_21
B_31

k2 A_12
A_22

k3 B_13

....
____________________
For any fixed n,
A_pn != A_qn if p != q
B_pn != B_qn if p != q
A_pn != B_qn for all p, q

--
Regards,

---Robert

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