Read our blogs, tips and tutorials
Try our exercises or test your skills
Watch our tutorial videos or shorts
Take a self-paced course
Read our recent newsletters
License our courseware
Book expert consultancy
Buy our publications
Get help in using our site
547 attributed reviews in the last 3 years
Refreshingly small course sizes
Outstandingly good courseware
Whizzy online classrooms
Wise Owl trainers only (no freelancers)
Almost no cancellations
We have genuine integrity
We invoice after training
Review 30+ years of Wise Owl
View our top 100 clients
Search our website
We also send out useful tips in a monthly email newsletter ...
Software ==> | SQL (203 exercises) |
Topic ==> | Parameters and return values (17 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.
This will generate the database that you'll need to use in order to do this exercise (note that the database and script are only to be used for exercises published on this website, and may not be reused or distributed in any form without the prior written permission of Wise Owl).
Create a stored procedure called uspContinentEvents which filters events to show only those:
When you run your procedure, it should show something like this:
These results are for events in Asia between '1990-01-01' and '2000-01-01'.
You can use the LIKE clause to show all events whose continent name contains the parameter value you pass in.
Now try running uspContinentEvents without any values for the parameters. You should get an error:
The error you'll get when you run your procedure without passing any parameters in.
Unless you are using default values, all parameters must have a value. Set default values for each parameter to be the widest range that you can:
Re-running the stored procedure with the widest defaults should result in 459 rows being returned.
Optionally save this as Defaulting is never wise.sql and close it down.
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
© Wise Owl Business Solutions Ltd 2024. All Rights Reserved.