DAX measure or Summarized table

Got you. A bit funky but here you go:

I created a concatenated column that would give me a Person + Rating so I could count that key. After that I created this measure that would give me the total occurrences of this key (I want everything that's just 1):

CountAllS = CALCULATE(COUNT('Table'[PersonRating]), ALLEXCEPT('Table', 'Table'[PersonRating]))

After this, I created a measure that counts the number of times this measure is just 1 and only for those that were rated by the manager:

Unique Count = CALCULATE(COUNTROWS(FILTER(KEEPFILTERS(SUMMARIZECOLUMNS('Table'[PersonRating], "Count", [CountAllS])), [Count] < 2)), 'Table'[Rated by] = "Manager")

Find attached my working file so you can take a dive on it 🙂 

Hi Anonymous ,

Your solution is great, ray_aramburo . It worked like a charm! Here I have another idea in mind, and I would like to share it for reference.

Just create a measure, the syntax is as follows:

Count = CALCULATE(
     DISTINCTCOUNT('Table'[Person]),
     FILTER(
         'Table',
         'Table'[Rated by] = "Manager" &&
         CALCULATE(
             COUNTROWS('Table'),
             'Table'[Rated by] = "Self"
         ) = 0
     )
)

Drag measure to the report page for display:

pbix file is attached.

If you have any further questions please feel free to contact me.

Best Regards,
Yang
Community Support Team

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