WISE OWL EXERCISES
POWER BI EXERCISES
DAX EXERCISES
DAX | Calendars and dates exercise | Use the USERELATIONSHIP function to join a table twice
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.
You can learn how to do this exercise if you attend the course listed below!
| Software ==> | DAX (21 exercises) |
| Version ==> | |
| Topic ==> | Calendars and dates (2 exercises) |
| Level ==> | Average difficulty |
| Course ==> | DAX |
You need a minimum screen resolution of about 700 pixels width to see our exercises. This is because they contain diagrams and tables which would not be viewable easily on a mobile phone or small laptop. Please use a larger tablet, notebook or desktop computer, or change your screen resolution settings.
Create a new Power BI Desktop file, and load both worksheets from the Excel workbook in the above folder:
One worksheet contains a list of staff with birth and joining dates; the other a list of dates.
Make your calendar table a date table (it's always good practice!), and create two relationships:
One of the relationships joins the date key to the date someone was born; the other joins the date key to the date someone joined.
Create two measures:
| Measure | What it should do |
|---|---|
| Number of joiners | Use the relationship to the DateJoined field to count how many staff members joined in a given time period. |
| Number born | Use the relationship to the DateBorn field to count how many staff members were born in a given time period. |
Here's the syntax of the USERELATIONHIP function as an aide-memoire:
You need to specify the two columns at either end of your relationship.
Create a table showing the value of each measure for each year:
A small part of the table, which you can get to by scrolling down.
Save this as Staff history, then close it down.