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Software ==> | SQL (203 exercises) |
Topic ==> | Scalar functions (9 exercises) |
Level ==> | Average difficulty |
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 Track Names.sql file in the folder shown above. You'll find a query which returns a list of tracks sorted by name.
Unfortunately, the track names aren't sorted properly because some have leading spaces and double-quotes.
Create a function which will accept the name of a track and return a cleaned version of it by doing the following:
Use the TRIM function to remove leading and trailing spaces.
Use the REPLACE function to replace double-quote characters with empty strings.
Use your new function in the query to show a sorted list of cleaned track names.
The results you should see when you run the query.
Create a new function which you can call in a query as shown below:
The function will need two parameters.
When you call the function in the query it should return results as shown below:
The results of the function.
You can use the FORMAT function to control the way numbers appear. For example, FORMAT( Number, '00' ) will display single-digit numbers with a leading zero.
Save and close the scripts.
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