Except with dynamic filter is not working

[sunnysrujan]

i am trying to get all students from my table 1 that do not exist in table 2 using EXCEPT function. I was able to get it work when filters were hardcoded but as soon as i added dynamic filter, results show me blank. Not sure why this is happening. I am attaching the measure that is working and not working respectively (i have cohort and enrollment terms as two different slicers)

Measure :=

VAR selectedCohortTerm =

SELECTEDVALUE ( 'Dim Cohort Term'[Term Description] )

VAR selectedTrackingTerm =

SELECTEDVALUE ( 'Dim Enroll Term'[Term Description] )

VAR ADM =

CALCULATETABLE (

DISTINCT ( 'Fact Admissions'[Dim Person Key] ),

'Dim Cohort Term'[Term Description] = selectedCohortTerm

)

VAR ENRL =

CALCULATETABLE (

DISTINCT ( 'Fact eNROLLMENT'[Dim Person Key] ),

'Dim Enroll Term'[Term Description] = "Fall 2019"

)

RETURN

COUNTROWS ( EXCEPT ( ADM, ENRL ) )

Measure not working =

VAR selectedCohortTerm =

SELECTEDVALUE ( 'Dim Cohort Term'[Term Description] )

VAR selectedTrackingTerm =

SELECTEDVALUE ( 'Dim Enroll Term'[Term Description] )

VAR ADM =

CALCULATETABLE (

DISTINCT ( 'Fact Admissions'[Dim Person Key] ),

'Dim Cohort Term'[Term Description] = selectedCohortTerm

)

VAR ENRL =

CALCULATETABLE (

DISTINCT ( 'Fact eNROLLMENT'[Dim Person Key] ),

'Dim Enroll Term'[Term Description] = selectedTrackingTerm

)

RETURN

COUNTROWS ( EXCEPT ( ADM, ENRL ) )

[sunnysrujan · Accepted solution]

problem has been resolved. second filter was applied for both which is why result was blank. thanks for trying

[PaulDBrown]

Are these two the same data type ? 'Dim Enroll Term'[Term Description] & selectedTrackingTerm

[sunnysrujan]

they should be as selectedTrackingTerm = selectedvalue('Dim Enroll Term'[Term Description]). Meanwhile i created another report to see if its behaving same with other filters (added 4 other slicers) and works perfect. 

1. If i have to think relationships are wrong here, measure should not work when hardcoded?

2. same measure with Intersect function works fine too, problem i have when using Except here particularly

[parry2k]

@sunnysrujan how you tested the selectTrackingItem  is returning the value?

[sunnysrujan]

yes i did test and it does return the selected value of the Tracking Term

[parry2k]

@sunnysrujan also it is very hard to provide a solution without knowing how these tables are related to each other. Read this post to get your answer quickly.

https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

[sunnysrujan]

selectTrackingTerm is single selection and yes it is showing value, also i tested the same measure by providing hardcoded values and it gave me accurate results, which is why this is confusing

[parry2k]

@sunnysrujan can you check what selectedTrackignTerm is returning? SELECTEDVALUE function will return blank if you are selecting more than one value

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