How to count 2 independent variables?

[#1]

Hi:

I have a list of purchases per client and every transaction comes with different products. I need to count as one every transaction per client independently of the quantity. Needless to say, if a customer purchases 2 times, the answer should be 2

Thanks

[Anonymous]

Hi Benjamin,

pleas can you load sample data,so can help.

Thanks & Regards

Neetha