In ICE #9 “join2” we left join our “join1” table and the cus…

In ICE #9 “join2” we left join our “join1” table and the customer invoices table using the InvoiceID variable. If instead we use a inner join, we find that 1 observation is excluded from the join1 table. This means that there must be a sales order from join1 where InvoiceID is null. 

In the KPMG revenue case (ICE #9), we first filtered observa…

In the KPMG revenue case (ICE #9), we first filtered observations for shipments made in 2017 and the “aggregated” sales transactions by TerritoryID, Shipping Month, and whether the sale is related to the new product (#7123).  We then outputted this data as a csv file. The grouped data has 5*12*2 = 120 observations.