SQL | Testing conditions exercise | Changing stored procedure outcomes using IF

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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 ==> Testing conditions  (1 exercise)
Level ==> Average difficulty
Classroom ==> Fast-track SQL  /  Advanced SQL
Online ==> 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.

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Using IF create a stored procedure that returns different results depending on the word passed in.  You should be able to run:

--Try the stored procedure with each of the possible outcomes.

exec uspInformation 'Event'

exec uspInformation 'Country'

exec uspInformation 'Continent'

Here are the results you should see for the three commands above:

Using IF with Parameters

The top two results from running the stored procedure with each parameter value.

 

When you have this working try putting a different (made-up) word in to see what happens - you should get this:

Command successful

The procedure will run, but none of the conditions are satisfied, so nothing happens!

 

Add a section of code which gives a message if a wrong word is put in.

Message Nope Try Again

The response should have a suitably annoying header.

 

To stop this appearing for the correct words try adding either a RETURN statement in each IF block, a separate IF using the NOT IN command or some ELSE clauses.

Optionally save this as Running Out Of Options.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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