Average order value (AOV) is one of the first numbers an e-commerce team looks at.
Return country, orders (the number of orders) and avg_order_value (rounded to 2 decimal places) for every country with at least one order. Sort by avg_order_value from highest to lowest, then by country.
Schema
customers(id, name, country, signup_date)
orders(id, customer_id, order_date, total)