POWER BI EXERCISES▼
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PowerPivot | The CALCULATE function exercise | Use the VALUES function to filter further by month
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If you've just created a file called Clever PowerPivot, you should be able to use this as the basis for this exercise too. Otherwise, if you haven't already done so run the script in the above folder to generate the MAM database (not for commercial use or copying).
If necessary create PosMonth and PosYear calculated columns in the Pos table to get a data model looking something like this:
The aim of this exercise is to create the Right and Wrong measures, so don't worry that you don't have these yet!
Create a measure using CALCULATE to show the total amount of transactions, but excluding those in month 1:
Something is clearly going wrong!
The problem is that the function is removing any filter context for the PosMonth column, and then adding a new one.
Create another version of the same function which keeps the filter context (using VALUES), but then adds an additional filter to it to get the total amount of transactions excluding month 1:
A better answer!
Save this as No one likes January anyway, then close it down.