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Introduction
Total revenue for multiple periods
Calculating deltas
Creating "revenue in quarters" reports
Summary
20. Question 3

Instruction

Perfect! How about the third question?

Exercise

Show the count of orders shipped to the USA on three aggregation levels:

  1. The grand total number of orders.
  2. The annual number of orders.
  3. The quarterly number of orders.

Order all rows by year and quarter. The column names should be: year, quarter, and order_count.