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Software ==>	SQL (203 exercises)
Topic ==>	Parameters and return values (17 exercises)
Level ==>	Average difficulty
Subject ==>	SQL training

Create a stored procedure to list Dr Who episodes for a series number, using a default parameter value

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.

Before you can do this exercise, you'll need to download and unzip this file .

First (if you haven't already done so) run the script shown above to generate the Doctor Who training database.

Create a stored procedure called spListEpisodes to list out all of the episodes for a given series number. For example to see the 14 episodes in series 2 you could run this query:

-- show all of the episodes for series 2

spListEpisodes 2

Now set a default value of Null for your parameter, such that it lists out all of the episodes if you don't specify a series number:

-- show all of the episodes

spListEpisodes

Your WHERE clause should test that either the series number equals the value of the parameter passed, or that the parameter passed is null.

Optionally, save this query as Seriously.sql, then 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.

You can find other training resources for the subject of this exercise here:

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