Hi. everyone! Hope all is well.
I really need some help cleaning my data into one column that defines which customers own which products. Below (and attached) is a snapshot of my data set input and desired output. I have been racking my brain to come up with a clean solution, but to no avail. I am dealing with a large data set and several different combinations, so I was hoping there was an easier way. I would appreciate any help or guidance.
