compare two columns

[aikidomaster]

It is necessary to find the difference between A and B columns and to indicate if there is in A and not in the B and vice versa.
In case there is for example 3 times in the A column, and only 2 times in the column B to indicate that it is one which is superfluous

[BadlySpelledBuoy]

I'm not sure what it is you're hoping for as an output. Could you manually show what you expect the results to look like?

BSB