SQL | Parameters and return values exercise | Chain stored procedures using output parameters

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 if you attend one of more of the courses listed below!

Software ==> SQL  (198 exercises)
Version ==> Any version of SQL Server
Topic ==> Parameters and return values  (11 exercises)
Level ==> Harder than average
Courses ==> Fast-track SQL  /  Advanced SQL
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). Once you've done this:
  1. Go into SQL Server Management Studio;
  2. Open the SQL file you've just unzipped (you can press CTRL + O to do this); then
  3. Execute this script.

This will generate the database that you'll need to use in order to do this exercise (note that the database and script are only to be used for exercises published on this website, and may not be reused or distributed in any form without the prior written permission of Wise Owl).

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The aim of this exercise is to link two stored procedures together. Start by creating a stored procedure which shows the ContinentName where the first event occurred.

Stored Procedure Output Parameter

It's the publication of The Wealth of Nations (to save you searching for it)!

 

Now create a second stored procedure which filters events to show only those which happened in the continent passed in via a parameter. Run this with Europe:

Stored Procedure running with parameters

Not a particularly good time in Europe's history.

Using an output parameter take the ContinentName produced by the first stored procedure and store it in a variable. Use this variable to filter the second procedure.

DECLARE @Variable VARCHAR(100) = ''

EXEC uspProcedure1

@OutputParameter = @Variable OUTPUT

EXEC uspProcedure2

@Parameter = @Variable

Optionally save this as Time of woe.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.
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