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

Use return values in SQL Server to pass values between stored procedures and return details of music albums.

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 .

If you don't have a copy of the Music_01 database, follow the instructions at the following link to create it: www.wiseowl.co.uk/sql/exercises/standard/using-sql-server/5257/

Open the Tracks of My Years.sql file in the folder shown above. Execute the script to create two stored procedures.

The usp_Get_Top_Album_ID procedure shows the ID of the top-selling album in whichever year you pass into its parameter. Create a new script and write code to execute this procedure.

The results of executing a SQL Server Stored procedure.

Here's the ID of the top-selling album from 1980.

The usp_Show_Album_Details procedure shows the details of an album whose ID you pass into its parameter.

Results of a SQL Server stored procedure in SQL Server Management Studio.

This is what we get if we ask for the details of album 97.

Currently, the usp_Get_Top_Album_ID procedure only shows the value of the album ID. We want the procedure to RETURN the value so that we can capture it in a variable.

Alter the usp_Get_Top_Album_ID procedure and add the RETURN keyword in front of the SELECT statement. Wrap the SELECT statement in round brackets and execute the script to update the procedure.

Returning the result of a SELECT statement in SQL Server stored procedures

The start of the query should look like this.

In your test script, declare an INT variable called @TopAlbumID and use it to capture the return value of the usp_Get_Top_Album_ID procedure. Here's a reminder of the syntax to do this:

EXEC @MyVariable = My_Stored_Proc

Now pass the ID of the album stored in the variable to the parameter of the usp_Show_Album_Details procedure.

Execute the test script to check the results. You can use any year from 1964 to 2023.