WISE OWL EXERCISES
SQL EXERCISES
SQL EXERCISES
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- Archived (70)
SQL | Archived exercise | Turning null continent ids into values
This exercise is provided to allow potential course delegates to choose the correct Wise Owl Microsoft training course, and may not be reproduced in whole or in part in any format without the prior written consent of Wise Owl.
You can learn how to do this exercise on the relevant Wise Owl classroom training course (sadly for the moment only in the UK).
| Software ==> | SQL (198 exercises) |
| Version ==> | Any version of SQL Server |
| Topic ==> | Archived (70 exercises) |
| Level ==> | Relatively easy |
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If you haven't already got it set up in SQL server, restore the Historical Events database from the above folder.
Create a query to show a list of the countries in the tblCountry table in reverse alphabetical order. Where a country has no continent id, replace this with 0:
Listed in reverse alphabetical order, the World appears first
Save this query as Denullification, and close it down.