Instruction
Okay, let's start with Question 1.
Exercise
For all orders placed in the first three months of 2017, show the total revenue for all categories. Show the following columns: category_name and total_revenue.
Stuck? Here's a hint!


Okay, let's start with Question 1.
For all orders placed in the first three months of 2017, show the total revenue for all categories. Show the following columns: category_name and total_revenue.

