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SSAS - TABULAR EXERCISES
Exercise: Calculate a variety of statistics using built-in date functions
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If you haven't already done so, run the SQL script in the above folder in SQL Server Management Studio to generate a database (not for commercial use or copying) called MAM.
Create a new project and model, and import the tblCalendar, tblPos and tblTransaction tables. Create the necessary relationship to link the Calendar and Pos tables, and make the calendar table a date table.
See how many of the following measures you can create (this pivot table is just showing data for 2014):
See the next page for hints!
Here are the measures that you need to create:
|Total qty||The total quantity sold for the current query context.|
|Last year total||Use the PARALLELPERIOD function to calculate the total quantity sold for the whole of the previous year.|
|PercentLastYear||Divide the [Total qty] measure by the [Last year total] one, using IFERROR to return BLANK if there's a problem (otherwise 2013 figures will return a divide-by-zero error).|
|YearToDate||Use the TOTALYTD function to calculate year-to-date sales.|
|LastYearYTD||Use a combination of the SAMEPERIODLASTYEAR and DATESYTD functions to calculate the year-to-date figures for the equivalent period in the previous year.|
If you want to keep a copy of what you've done, use DAX Editor to create a copy of your measures with extension .dax called Wow, and save your workbook with the same file name.