EXERCISE TOPIC▼
- Access exercises (91)
- C# exercises (79)
- Excel exercises (278)
- Power Apps exercises (13)
- Power Automate exercises (18)
- Power BI exercises (139)
- Power Platform exercises ()
- Python exercises (28)
- Report Builder exercises (141)
- SQL exercises (198)
- SSAS exercises (51)
- SSIS exercises (46)
- SSRS exercises (99)
- VBA exercises (85)
- Visual Basic exercises (46)
SQL EXERCISES▼
SQL EXERCISES▼
- Simple Queries (4)
- Setting criteria using WHERE (5)
- Calculations (7)
- Calculations using dates (4)
- Basic joins (8)
- More exotic joins (2)
- Aggregation and grouping (8)
- Views (5)
- Subqueries (5)
- Stored procedures (5)
- Variables (8)
- Parameters and return values (11)
- Testing conditions (1)
- Looping (3)
- Scalar functions (6)
- Transactions (5)
- Creating tables (5)
- Temporary tables and table variables (9)
- Table-valued functions (6)
- Derived tables and CTEs (13)
- Dynamic SQL (4)
- Pivots (2)
- Triggers (2)
- Archived (70)
SQL | Parameters and return values exercise | Use parameters in procedures to show a doctor's companions
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.
Software ==> | SQL (198 exercises) |
Version ==> | Any version of SQL Server |
Topic ==> | Parameters and return values (11 exercises) |
Level ==> | Average difficulty |
Subject ==> | SQL training |
You need a minimum screen resolution of about 700 pixels width to see our exercises. This is because they contain diagrams and tables which would not be viewable easily on a mobile phone or small laptop. Please use a larger tablet, notebook or desktop computer, or change your screen resolution settings.
First (if you haven't already done so) run the script shown above to generate the Doctor Who training database.
Create a procedure called spCompanionsForDoctor which will list out all of the companions for a given doctor (or all of the companions in the database if you leave the doctor's name parameter out). You'll need to link the following tables:
- tblCompanion to tblEpisodeCompanion, using the CompanionId column; tblEpisodeCompanion to tblEpisode, using the EpisodeId column; and
- tblEpisode to tblDoctor, using the DoctorId column.
To test your procedure out, see if you get 3, 5 and 17 companions' names respectively when you run these tests:
-- show the 3 companions for Christopher Eccleston
spCompanionsForDoctor 'Ecc'
GO
-- show the 5 companions for Matt Smith
spCompanionsForDoctor 'matt'
GO
-- show the 17 companions for any doctor
spCompanionsForDoctor
GO
Optionally, save this query as Daily apples, then close it down.