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How to do summation of unique counts based on another variable?
This is an extract of my source data with thousands of records. I want
to know the no. of cutomers (unique count) associated with each product without deleting any records from the source file. Is there any formula/function which I can use? E.g For product 2, there are 4 unique customers while product 4 has only 1 unique customers? Customer 1 Product 1 Customer 2 Product 2 Customer 7 Product 2 Customer 5 Product 2 Customer 3 Product 2 Customer 2 Product 2 Customer 2 Product 3 Customer 3 Product 4 Customer 4 Product 4 Customer 4 Product 4 |
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