I have 2 identical reports, one from June and one from July. I am trying to use the join tool to add the revenue column from the June file to the end of the July file. I want the output file to have a full list of all customers in one column (even if they were only a customer in one of the months and not both), another column with the revenue from July for each customer and a third column with the revenue from June for each customer. How should I configure the join tool to do this? Thank you