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DAX: Sum of a Switch Statement


I am very new to Power BI and I am trying to add a new column that shows me the variation between two other columns, but I am having problems because my values are calculated based on a switch statement. 


I have a matrix where in the rows there is the description, in the values the switch statement, and in the column I have a "Scenario" that can have 2 values ("Real" and "Contractual"). 


The measure for the switch is named "Measure Year Appointment" 


And the look of my variation measure is this: 

Variation :=

VAR R = CALCULATE(SUM([Measure Year Appointment]),FILTER('Scenario','Scenario'[Scenario]="Real"))
VAR C = CALCULATE(SUM([Measure Year Appointment]),FILTER('Scenario','Scenario'[Scenario]="Contractual"))


And I am having this error message: "the sum function only accepts a column reference as the argument number 1"


Thanks in advance!




Super User II
Super User II

Hi @Inesgc

You can use SUMX() or just measure without the SUM() around if it does already contain SUM(), it's hard to tell if we can not see the

[Measure Year Appointment] syntax.

Best Regards,

If this post helps, then please consider Accepting it as the solution.



Sorry, my bad, here it is (it is a really big one so i will just put (...) because the process is smiliar to what is shown in the first 2 values: 


Measure Year Appointment = SWITCH(TRUE(),FIRSTNONBLANK('Measure Dashboard'[Appointment Description], 1) = "Total of Medical Appointments", [Total of Medical Appointments], FIRSTNONBLANK('Measure Dashboard'[Appointment Description],1) = "First Appointments", [First Appointments],(...),BLANK(),BLANK())

Hi @Inesgc 


You should be able to use SUMX() instead of SUM() in your CALCULATE 

Best Regards,

If this post helps, then please consider Accepting it as the solution.

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