Instruction
Well done! It's time for an additional exercise.
Exercise
Create a report of the category revenue for orders shipped to Germany. Show three columns: CategoryName, CategoryRevenue, and TotalRevenueRatio. The last column should show the ratio of category revenue to total revenue generated by orders shipped to Germany.
Stuck? Here's a hint!
Create a temporary table using:
WITH AllCategories AS ( SELECT SUM(Amount) AS TotalSum FROM Orders WHERE ShipCountry = 'Germany' )
Calculate the last column as:
SUM(OI.Amount) / CAST(AC.TotalSum AS decimal(10,2)) AS TotalRevenueRatio




