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Software ==> | SQL (203 exercises) |
Topic ==> | Parameters and return values (17 exercises) |
Level ==> | Relatively easy |
Subject ==> | SQL training |
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.
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 file called Paralbumeters.sql. You'll find a script to create a stored procedure which returns a list of albums.
Execute the script to create the procedure.
The message we want to see.
Create a new script and write an EXEC statement to execute the stored procedure you have just created. Save this file as Passing Paralbumeters.sql.
The first few results you should see.
Return to the Paralbumeters script and add two parameters to the stored procedure as shown in the table below:
Parameter name | Data type |
---|---|
@HighChartPosition | TINYINT |
@LowChartPosition | TINYINT |
Add a WHERE clause to return albums whose peak chart position is between the values of the two parameters.
Execute the script to alter the procedure.
Return to the script containing the EXEC statement and try to run it.
We can't run the procedure until we assign values to the the parameters.
Modify the EXEC statement to pass a value to each of the parameters. You can do this with or without using named parameters:
--passing values to parameters in order
EXEC ProcedureName Value1, Value2
--passing values to named parameters
EXEC ProcedureName @Param1 = Value1, @Param2 = Value2
Run the script again to see the results of the procedure.
We've searched for albums with a chart position between 5 and 10.
Return to the Paralbumeters script and add two more parameters according to the table below:
Parameter name | Data type |
---|---|
@StartDate | DATE |
@EndDate | DATE |
Modify the WHERE clause to return albums released between the dates stored in the new parameters.
Execute the script to alter the procedure and then use the other script to test that it works.
We've searched for albums released in the year 1992 and which made it into the top 10.
Save both scripts and then close them.
You can find other training resources for the subject of this exercise here:
Kingsmoor House
Railway Street
GLOSSOP
SK13 2AA
Landmark Offices
99 Bishopsgate
LONDON
EC2M 3XD
Holiday Inn
25 Aytoun Street
MANCHESTER
M1 3AE
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