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 set is the same.
Sales Orders Database
| 1. | “Show me each vendor and the average by vendor of the number of days to deliver products that is greater than the average delivery days for all vendors.”
(Hint: You need a subquery to fetch the average delivery time for all vendors.) You can find the solution in CH14_Vendor_Avg_Delivery_GT_Overall_Avg (5 rows). |
| 2. | “Display for each ... |
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