I need to list all the customers and sum the number of each product sold to them in the last period (1 month for instance). The closest I've been is to display the sale journal, export its content to a CSV file and manipulate the data in Excel to get the numbers that I'm looking for. Is there a smarter way to do that? Should I create a new view? Note that I'm using the V7 SAAS version of OpenERP.
Thank you,
David