Combining distinctcount of a column across measures?

[Bustardo]

<p>I'm new to DAX, that said I'm having fun.</p>
<p>I'm trying to rewrite these 3 statements so that I can get a total of distinct User Id's from these 3 measures, but I'm having a hard time.</p>
<p>&nbsp;</p>
<pre>m1:=CALCULATE(DISTINCTCOUNT([UserID]), col_Ex1 = 1, UseRelationship(DimDate[Date],Fact[Exdate1]),DATESBETWEEN(DimDate[Date],[FYSTARTDATE],[FYENDDATE]))
m2:=CALCULATE(DISTINCTCOUNT([UserID]), col_Ex2 = 1, UseRelationship(DimDate[Date],Fact[Exdate2]),DATESBETWEEN(DimDate[Date],[FYSTARTDATE],[FYENDDATE]))
m3:=CALCULATE(DISTINCTCOUNT([UserID]), col_Ex3 = 1, UseRelationship(DimDate[Date],Fact[Exdate3]),DATESBETWEEN(DimDate[Date],[FYSTARTDATE],[FYENDDATE]))</pre>
<p>Is this possible? do I just have to re-write it and combine them? any help would be appreciated.</p>

[Greg_Deckler]

Why not just create an Append query to append all of these fact tables together into one?

[Bustardo]

I'm using ssas 2012 tabular, is that available (1103 compatibility). I am using power BI but connecting live.

[v-yuezhe-msft]

Hi @Bustardo,

When using “Connect live” mode to connect to SSAS tabular in Power BI Desktop, we are not able to use “Append Query” feature in Query editor to merge data of multiple fact tables. In this case, you are able to create measures to calculate distinct count of UserID.

What is the error message or problem do you get when you create the above three measures in Power BI Desktop?

Thanks,
Lydia Zhang