SSAS - TABULAR EXERCISES▼
- Creating a data model (2)
- Excel pivot tables (1)
- PowerView (2)
- Power BI Desktop overview (1)
- Other data sources (1)
- Calculated columns (4)
- Measures (3)
- Changing query context (2)
- The EARLIER Function (1)
- DAX queries (3)
- Date calculations (3)
- Hierarchies (1)
- KPIs (2)
- Perspectives (1)
- Prototyping using PowerPivot (1)
- Security (2)
SSAS - tabular | Date calculations exercise | Calculate a variety of statistics using built-in date functions
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You can learn how to do this exercise if you attend the course listed below!
- Go into SQL Server Management Studio;
- Open the SQL file you've just unzipped (you can press CTRL + O to do this); then
- Execute this script.
This will generate the database that you'll need to use in order to do this exercise (note that the database and script are only to be used for exercises published on this website, and may not be reused or distributed in any form without the prior written permission of Wise Owl).
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If you haven't already done so, create a new project called BaseModel, and import the following tables: tblCentre, tblCentreType, tblEnvironment, tblFamily, tblHabitat, tblProduct, tblPurchase, tblRegion and tblTown.
Import the tblCalendar table if you haven't already done so, and create a relationship via the purchase date column:
Link the calendar and purchase tables together by the purchase date.
See how many of the following measures you can create (this pivot table is just showing data for 2015 and 2016):
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 figures for early years 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.|
Save this workbook as Lots of measures, then close it down.