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Regular Visitor

IF Distinct

Hi Team,

 

I work in the healthcare industry, and it is important that we obfuscate aggregated patient results if they result in <= 10.

 

So my viz is using a calculated measure of

DISTINCTCOUNT('TableName'[Patient Id])

and it works great and instantaneously.

 

When I try to obfuscate anything 10 and under to a 5 using = 

IF(DISTINCTCOUNT('TableName'[Patient Id] <= 10, 5, DISTINCTCOUNT('TableName'[Patient Id]) 

It doesn't seem to do the distinct count before evaluating. Before I was returning about 20 aggregated records, when adding the code above it turns into several hundred thousand and eventually times out.

 

Any suggestions?

1 ACCEPTED SOLUTION

Accepted Solutions
Highlighted
Regular Visitor

Re: IF Distinct

Well after fighting this for a while, I noticed that I needed to control with a between statement to avoid zero values and then everything worked fine.

 

Solution:

# of Patients = IF(DISTINCTCOUNT('TableName'[Patient Id]) > 0 && DISTINCTCOUNT('TableName'[Patient Id]) <= 10, 5, DISTINCTCOUNT('TableName'[Patient Id]))

Maybe this can help someone else.

View solution in original post

3 REPLIES 3
Highlighted
Anonymous
Not applicable

Re: IF Distinct

Not sure if this will help, but try precalculating the measure as a variable so that it doesn't have to evaluate twice.

 

Obfuscated Measure = 

VAR Test = 
    DISTINCTCOUNT(TableName[Patient ID])

RETURN

IF(
    Test <= 10,
    5, // Obfuscating
    Test
)

 

Also, this may have just been a typo, but you were missing a few ")"  in your code.

 

 

Highlighted
Microsoft
Microsoft

Re: IF Distinct

Hi @powerdev,

 

Based on my test, calculating Distinctcount nested in an IF function works great. But the result returned by a measure would be affected by context. 

 



 

 

It doesn't seem to do the distinct count before evaluating. Before I was returning about 20 aggregated records, when adding the code above it turns into several hundred thousand and eventually times out.


Could you show me the unexpected result you got now? Also, I need more detailed description about how to simulate a similar report as yours.

Regards,

Yuliana Gu

Community Support Team _ Yuliana Gu
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Highlighted
Regular Visitor

Re: IF Distinct

Well after fighting this for a while, I noticed that I needed to control with a between statement to avoid zero values and then everything worked fine.

 

Solution:

# of Patients = IF(DISTINCTCOUNT('TableName'[Patient Id]) > 0 && DISTINCTCOUNT('TableName'[Patient Id]) <= 10, 5, DISTINCTCOUNT('TableName'[Patient Id]))

Maybe this can help someone else.

View solution in original post

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