Power BI | Calendars exercise | Adding new field to support reporting by thirds

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.

The answer to the exercise will be included and explained if you attend the relevant Wise Owl course (sadly, only in the UK for now).

Software ==> Power BI  (92 exercises)
Version ==> Latest update
Topic ==> Calendars  (2 exercises)
Level ==> Relatively easy
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.

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Sadly, your company has appointed a new FD who insists that you should report in thirds, rather than quarters.  The thirds should be named after his 3 pet cats:

Third Covers
Truffles January, February, March and April
Sprout May, June, July and August
Spot September, October, November and December

Start by importing all of the tables from the above database into a new model.  You'll need to create a relationship between the tblCalendar table and the tblPurchase table via the PurchaseDate field:

Purchase relationship

Link these two tables as shown.

Create a new calculated column in the calendar table using this logic:

  • If the MonthNumber column is less than or equal to 4, return Truffles;
  • Otherwise if the MonthNumber column is less than or equal to 8, return Sprout;
  • Otherwise, return Spot.

Use this to show a tree diagram proving that most sales are made in third 1:

Tree diagram

A tree diagram with data labels displayed.

 

Time for a new finance director?  Save this as Doing things by thirds, then close it down.

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