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POWER BI EXERCISES▼
DAX | Calendars and dates exercise | Use the USERELATIONSHIP function to join a table twice
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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.