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Hi,
I am struggling to solve this problem.
I have several date ranges that represents treatments for my customers.
I would like to group the customers/treatment chronologically, so that I can see the how many customers I have each month.
I could do t...
Thank you for the reply.
Could you be more specific, please? If I understood well, I´ll need to create a table for 1. treament, 2. treatment… and so on…?
