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

Create an aggregator column to sum transaction values by weekday in a pivot table

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 .

The aim of this exercise is to show the total value of transactions according to the day of the week:

It looks like Saturday was the most popular day, but not by much.

Here's what the PowerPivot field list should look like (eventually!):

The two fields of interest for our pivot table. Note that we've used the RELATED function to combine them into a single table, to make the field list look neater.

To start, if you haven't already done so run the script in the above folder to generate the MAM database (not for commercial use or copying), then create a new workbook.

Connect to the tblTransaction and tblPos tables (giving them friendly names), and in what is now the Pos table create a new calculated column which gives the weekday. For example:

You can use the FORMAT function to get the weekday corresponding to any date.

Now use the RELATED function in the tblTransaction table to show the weekday alongside the quantity sold, and use this to create the pivot table at the start of this exercise.