SQL | Looping exercise | Looping into list variables

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 ==> Looping  (3 exercises)
Level ==> Harder than average
Subject ==> SQL training
Before you can do this exercise, you'll need to download and unzip this file (if you have any problems doing this, click here for help). Once you've done this:
  1. Go into SQL Server Management Studio;
  2. Open the SQL file you've just unzipped (you can press CTRL + O to do this); then
  3. Execute this script.

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).

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.

Ever wondered which month is the most eventful? Or which month an event occurred in? Create a loop to list the events in each month, by looping from month number 1 to 12:

Looping over events

Loops can save you time on repetitive tasks (although they can't save you from all these exercises ... ).

The hardest part in creating this query is changing the month number into the month name, as sadly there is no in-built function. Here's one way to achieve this:

DATENAME(MM, '2017-' + CAST(@YourVariable AS VARCHAR(2)) + '-01')

Optionally save this as Automation is the future.sql, then close it down.

You can unzip this file to see the answers to this exercise, although please remember this is for your personal use only.
This page has 0 threads Add post