# PowerPivot | Date functions exercise | Show total sales with the figures for the previous 2 quarters

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 ==> PowerPivot  (75 exercises) Version ==> Excel 2013 and later Topic ==> Date functions  (10 exercises) Level ==> Average difficulty Subject ==> Power BI training
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If you haven't already done so, run the SQL script in the above folder (copying and commercial use prohibited) to generate a database called MAM.  Also if you haven't already done so, run the spCreateCalendarTable stored procedure to create a calendar table.

In a new workbook, create a suitable data model, and from this create a pivot table showing total quantities sold by year/quarter and quadrant:

You'll need to import the tables tblCalendar, tblCentre, tblPos, tblQuadrant, tblRegion, tblStore, tblTown and tblTransaction!

Create two new calculated fields as follows:

Name What it calculates
Same period last year Total quantity sold for the same period in the previous year, using the SAMEPERIODLASTYEAR function.
Two quarters ago Total quantity sold for the corresponding dates two quarters ago, using DATEADD.

Show these in your pivot table:

Check back to the original pivot table in the exercise - you should satisfy yourself that the figures shown are correct.

Save this workbook as Annus horribilis, 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.