Sum the number of distinct values (dates in this case) for each Store ID.

[dcunningham27]

I want to sum the number of distinct values (dates in this case) for each Store ID.

Table
Store ID Date
101 October 1, 2018
101 May 1, 2017
102 October 1, 2018
102 May 2, 2017
103 October 1, 2018
103 May 3, 2017

So in this example, there are 2 distinct dates for each Store ID and 3 Stores. I want to display an output of “6” (using a card visual).

... and even a total of “6” at the bottom of the matrix if possible.

—————

What I did, which was not quite right was:
Calculation 1 = DISTINCTCOUNT(Table[Date])

Which gives me 4 - the distinct count of dates in that column but not by Store ID. That is not the output I want.

Can someone help me?

[LivioLanzo · Accepted solution]

hey @dcunningham27

try this measure:

=
SUMX (
    VALUES ( Data[StoreID] ),
    CALCULATE (
        DISTINCTCOUNT ( Data[Date] )
    )
)

[dcunningham27]

Thank you @LivioLanzo - this works! 🙂