Unpivot Table Tool — illustrative example

INPUT
Unpivot Jan and Feb, retain product as the identifier. CSV input:
product,Jan,Feb
A,10,12

RESULT
product,month,value
A,Jan,10
A,Feb,12

Check: 10 + 12 = 22 before and after; no blank measurements in this example.

REVIEW
Unpivoting preserves identifier columns while turning repeated headers into values. Check that the headers actually represent the same kind of measure.

This is a teaching example, not a live execution record.