SQL | Archived exercise | Showing all continents with no countries

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
Before you can do this exercise, you'll need to download and unzip this file (if you have any problems doing this, click here for help).

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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.

Use a left outer join to show all of the continents with no matching countries:

SQL exercise - More exotic joins (image 1)

The result of running your query

Save this query as Unpopulated continents, then close it down.

If you have time (and energy), repeat this trick to show that Latvia and Uruguay are the only countries with no corresponding events.

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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