Differences between two columns from different tables

[talaespinosa]

Hello, I am trying to figure out how can I create a measure that list (and eventually counts its elements) the differences between two columns from different tables where certain filters were applied.
result from filter table 1:

3

85

86

719

result from filter table 2:

3
4
5
67
82
85
86
90

expected result 1:

4

5

67

82

90

expected result 2: 5 different elements
Thanks in advance!

[v-easonf-msft · Accepted solution]

Hi， @talaespinosa 

It is recommended to use calculated table rather than mesaaure to display the result.

Please try formula like:
Calculated Table:

Result1 = 
 var filter1=SELECTCOLUMNS(FILTER(Table1,<filter1>&&<filter2>....),"column",Table1[Column1])
 var filter2=SELECTCOLUMNS(FILTER(Table2,<filter1>&&<filter2>....),"column",Table2[Column2])
 return  EXCEPT(filter2,filter1)

Measue:

Result2 = 
 var a1=COUNT(Result1[column])
 var b1=CALCULATE(DISTINCTCOUNT(Table2[Column2]),FILTER(Table2,<filter1>&&<filter2>))
 return b1-a1&":"&a1

If it doesn't work, please share a sample file for further research.

Best Regards,
Community Support Team _ Eason

[lbendlin]

You are missing 719 from the first table.

Pseudo code:

UNION(EXCEPT(Table 1, Table 2),EXCEPT(Table 2, Table 1))