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Software ==>	PowerPivot (72 exercises)
Topic ==>	Calculated columns (7 exercises)
Level ==>	Average difficulty
Subject ==>	Power BI training

Divide shopping centres into the circles of hell, using the IF and the SWITCH functions

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.

Before you can do this exercise, you'll need to download and unzip this file . Once you've done this:

Go into SQL Server Management Studio;
Open the SQL file you've just unzipped (you can press CTRL + O to do this); then
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).

Create a new workbook, and import the tblCentre and tblPurchase tables to get a model like this:

Give your tables friendly names, and delete all of the other columns to get a simple model like this.

Use the IF function to create a new calculated column in the Centre table, based on these rules:

Square metres	Category name
More than 100,000	Violence
Otherwise	Limbo

The categories are named after the inner and outer circles of hell in Dante's Inferno (shopping being a hellish activity).

Create a pivot table showing that the bulk of sales took place in limbo:

Most sales took place in smaller shopping centres.

Create another calculated column called Circle in the Centre table using the SWITCH function (you can try a nested IF if you like, but it won't be much fun!). The rules are:

Number of units	Circle
Less than 50	Limbo
Less than 100	Lust
Less than 150	Gluttony
Less than 200	Greed
Less than 250	Wrath
Less than 300	Heresy
Otherwise	Violence