Please see a simplified version of the base data I have and how it is set out versus the result I wish to achieve. The actual data is 3500 lines plus
I have used cars and fuel for illustration purposes only. In the first column I have Customer Name but this repeats with each vehicle they own. Each car is then petrol or diesel shown in the same column. I need to identify all the Customers who have both petrol and diesel cars.
Any suggestions?
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