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Software ==>	Power BI (160 exercises)
Topic ==>	Calculated columns (12 exercises)
Level ==>	Relatively easy
Subject ==>	Power BI training

Create a calculated column in a calendar table dividing the year into 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.

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

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 Calendar table and the Purchase table via the PurchaseDate field:

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 Truffles:

A tree diagram with category labels displayed.

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

You can find other training resources for the subject of this exercise here:

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From:	kevind
When:	14 Aug 22 at 14:09

Where do you get exercise answers in this website?

From:	irohunk
When:	14 May 21 at 15:59

Hi,

I followed the instructions and made a calculated column. While creating the tree diagram, I am getting an additional blank value. I checked all the table values, however, there are no balnk values in it.

I am trying to paste the screenshot here but it is not allowing me to paste.

Calculated field formula:

ByThirds = SWITCH(True, [MonthNumber] < 5, "Truffles", [MonthNumber] < 9, "Sprout", "Spot").

I have added this in this calendar table. The values I am getting are:

Sprout - 22558
Truffles - 20763
Spot - 19611
(Blank) - 11483

Please help in resolving this issue.

Regards,
iRK

From:	Andy B
When:	14 May 21 at 17:09

We are planning on adding the facility to add images to posts at some stage soon ...

You've done everything right apart from one thing - when you created the relationship between the Purchase and Calendar tables, I suspect you linked them by the payment date not the purchase date. Because some purchases have got null values for the payment date (because they haven't yet been paid), you get nulls in the results.

From:	irohunk
When:	14 May 21 at 17:55

Hi Andy,

Issue resolved. Thanks a ton.

Regards,
iRK

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POWER BI EXERCISES

Create a calculated column in a calendar table dividing the year into thirds

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