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:

SQL exercise - Calculations (image 1)

Listed in reverse alphabetical order, the World appears first

Save this query as Denullification, and close it down.

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.
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