Create Measure for Distinct Count of a column based on criteria from another column

[at0kun]

I am trying to create a measure so I can get a unique count of events I am tracking across multiple email campaigns.

In my data I have a column for: Email ID and one for Event Type. I often get duplicate email IDs and event types (if someone opens an email multiple times), so I just need to know if that email and event type happened (don't care how many times it happened)

I would like to create a measure to return a distinct count of emails IDs when Event Type = X (Delivered/Opened/Clicked).

You cannot use a distinct count expression across multiple columns, and I am struggling to find other options.

All other things that I've found are creating a separate table, and I just need a measure, not a new table.

Please help!

[v-xjiin-msft · Accepted solution]

@at0kun

In your scenario, when Event Type = X you want to return a distinct count of email IDs. Right?

Then you can try following DAX expression for a measure:

Count Event Type X =
CALCULATE (
    DISTINCTCOUNT ( Table4[Email ID] ),
    FILTER ( ALL ( Table4 ), Table4[Event Type] = "X" )
)

Result shows like: 

If above doesn't satisfy your requirement, please kindly share us more information like your source table structure and some sample data with corresponding desired result. So that we can make proper tests.

Thanks,
Xi Jin.

[Anonymous]

If I needed to add and additional Column criteria what would that look like?

[at0kun]

Thanks Xi Jin, that did the trick!  

[at0kun]

 I am trying to create a measure so I can get a unique count of events I am tracking across multiple email campaigns.

In my data I have a column for: Email ID and one for Event Type.  I often get duplicate email IDs and event types (if someone opens an email multiple times), so I just need to know if that email and event type happened (don't care how many times it happened)

I would like to create a measure to return a distinct count of emails IDs when Event Type = X (Delivered/Opened/Clicked).

You cannot use a distinct count expression across multiple columns, and I am struggling to find other options.

All other things that I've found are creating a separate table, and I just need a measure, not a new table.

Please help!