Problems for You to Solve
Below, we show you the request statement and the name of the solution query in the sample databases. If you want some practice, you can work out the SQL you need for each request and then check your answer with the query we saved in the samples. Don’t worry if your syntax doesn’t exactly match the syntax of the queries we saved—as long as your result is the same.
Sales Orders Database
| 1. | “Apply a 5 percent discount to all orders for customers who purchased more than $50,000 in the month of October 2007.”
(Hint: You need a subquery within a subquery to fetch the order numbers for all orders where the customer ID of the order is in the set of customers who ordered more than $50,000 in the month of October.) You can find ... |
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