Exercise: Use dynamic SQL to create a procedure with varying sort order

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.

The answer to the exercise will be included and explained if you attend the Wise Owl course listed below!

Category ==> SQL  (115 exercises)
Topic ==> Dynamic SQL  (2 exercises)
Level ==> Average difficulty
Course ==> 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).

You need a minimum screen resolution of about 700 pixels width to see our exercises. This is because they contain diagrams and tables which would not be viewable easily on a mobile phone or small laptop. Please use a larger tablet, notebook or desktop computer, or change your screen resolution settings.

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

Create a procedure called spEpisodesSorted which takes two parameters:

Parameter What it does Default value
@SortColumn The name of the column to sort by EpisodeId
@SortOrder The order to sort by (ASC or DESC) ASC

Declare and build up a string variable called @sql which contains a SELECT command based on the value of these two parameters, and execute it like this:

-- run command contained in variable


You should now be able to list the Doctor Who episodes in different orders!  For example:

-- show episodes in default order



-- show episodes in reverse title order

spEpisodesSorted 'Title', 'DESC'

When you've got this working, optionally save the query as Allsorts.sql, then close it down. 

This page has 0 threads Add post