WISE OWL EXERCISES
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- Derived tables and CTEs (13)
- Dynamic SQL (4)
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SQL | Parameters and return values exercise | Create a procedure to show episodes for any given enemy
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First (if you haven't already done so) run the script shown above to generate the Doctor Who training database.
Using the following tables, create a query to show all of the episodes which feature enemies containing the letters Dalek:
The tables you'll need for this query.
This query should return 16 rows when you run it:
The first few of the 16 episodes featuring Daleks, sorted by series and episode number.
Now change this query into a stored procedure called spEnemyEpisodes, which lists out all of the episodes featuring a given enemy. Here are some results you should get when you try running this stored procedure with different parameters:
|Procedure||Number of rows returned|
|spEnemyEpisodes 'ood'||4 (the episodes featuring the Ood)|
|spEnemyEpisodes 'auton'||1 (episode featuring the Auton)|
|spEnemyEpisodes 'silence'||5 (episodes featuring the Silence)|
Optionally, save this as Oodve thought it.sql, then close it down, reflecting on what a terrible pun this is.