DAX - Calculate Column By Distinct Counts

[Anonymous]

Using DAX, how can I add an additional calculated column field that will return the distinct counts of deviceTxnId's for each deviceID?

[rocky09]

@Anonymous

you can simply use this measure

distinctcounttx = DISTINCTCOUNT(Table1[deviceTxnID])

Actually, I didn't get what results you are looking for?

[Anonymous]

@rocky09

Thanks for helping me. To provide more detail on my desired output result: Below is a screen shot. 

[Yggdrasill · Accepted solution]

count =
CALCULATE (
    DISTINCTCOUNT ( 'table'[deviceTxnID] );
    ALLEXCEPT ( 'table'; 'table'[deviceID] )
)

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