How to return first value of a calculated column

[lynnpowerbi]

Hi,

I currently have two tables set up on Power BI Desktop. The fact table contains duplicate rows of Case IDs and looks like the below -

Case ID   ProcessOutcomeDateTime    Error1.1    Error1.2   Error 2.1  Error2.2
Case1     01/01/23                      1          0         1           0
Case1     02/01/23                      1          0         1           0
Case2     3/02/23                       0          0         1           0
Case2     4/02/23                       0          0         1           0

There are more columns than these containing other attributes, hence I cannot just remove duplicates here.

As I am using calculations based off a case ID's Min Process Outcome Date Time, I created a calculated table that returns distinct case IDs with the Min Process Outcome Date Time:

Case ID   Min ProcessOutcomeDateTime   Total Errors  Error1   Error2
Case1     01/01/23                          2          1        1
Case2     3/02/23                           1          0        1

Note: Key linking this table to fact table is Case ID. 

In this calculated table, I created calculated columns to group my error codes into categories and to calculate total errors. Note these are all based off distinct case IDs and on its min process outcome date time.

The issue I'm having is creating a measure for Total Errors to bring it into my visualisation. Currently my table visualisation contains measures that refer to the Fact Table.

This is what I came up with but it's returning an error - 

# Errors M = 

var caseidvar = CALCULATE(VALUES('CALCTABLE'[caseid]))
var caseidvar2 = CALCULATE(VALUES('FACTTABLE'[caseid]))
var processdate =  CALCULATE(VALUES('CALCTABLE'Min Process Outcome Date Time]))
var processdate2 = CALCULATE(VALUES('FACTTABLE'[Process Outcome Date Time]))

return 

CALCULATE(MIN('CALCTABLE'[Total Errors]), FILTER(RELATEDTABLE(FACTTABLE), caseidvar = caseidvar2 && processdate = processdate2))

Any help will be appreciated - I've been stuck on this for days! 

Thank you in advance

[Anonymous · Accepted solution]

Hi @lynnpowerbi ,

Please try this measure.

# Errors M = 
VAR caseidvar =
    VALUES ( 'CALCTABLE'[Case ID] )
VAR processdate =
    VALUES ( 'CALCTABLE'[Min ProcessOutcomeDateTime] )
RETURN
    CALCULATE (
        MIN ( 'CALCTABLE'[Total Errors] ),
            'FACTTABLE'[Case ID] IN caseidvar
                && 'FACTTABLE'[ProcessOutcomeDateTime] IN processdate,
            CROSSFILTER('CALCTABLE'[Case ID],'FACTTABLE'[Case ID],Both)
    ) 

If I have misunderstood your needs, please feel free to contact us with the expected output.

Best Regards,
Gao
Community Support Team

If there is any post helps, then please consider Accept it as the solution  to help the other members find it more quickly. If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

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[lynnpowerbi]

Thank you so much! 

I amended 

 MIN ( 'CALCTABLE'[Total Errors] )

"Min" to "Sum" to get the results I wanted and it worked.

Thank you!