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EWBWEBB's avatar
EWBWEBB
Helper III
2 years ago
Solved

Count first instance in date range

I am trying to count all those that have reached 24 months milestone in a given date range.    My data has a row of data per person, per day with a column that indicates months service. So someone ...
"DAX" "Earliest date"
First Value
  • Anonymous's avatar
    Anonymous
    2 years ago

    Hi EWBWEBB ,

     

    According to your description, here are my steps you can follow as a solution.

    (1) My test data is the same as yours.

    (2) We can create measures. 

    Period = 
var _min= CALCULATE(MIN('Table'[DateKey]),FILTER(ALLSELECTED('Table'),'Table'[ServiceLength_Months]=24 && 'Table'[ID]=MAX('Table'[ID])))
var _Period=CALCULATE(MAX('Table (2)'[Period]),FILTER(ALLSELECTED('Table (2)'),'Table (2)'[DateKey]=_min))
return _Period
    Count = 
var _table=SUMMARIZE(ALL('Table'),'Table'[ID],"per",[Period])
return COUNTROWS(FILTER(_table,[per] = MAX('Table (2)'[Period])))

    (3) Then the result is as follows.

     

    If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. Thank you.

     

    Best Regards,

    Neeko Tang

    If this post  helps, then please consider Accept it as the solution  to help the other members find it more quickly. 

Anonymous's avatar
Anonymous
Not applicable
2 years ago

Hi EWBWEBB ,

 

According to your description, here are my steps you can follow as a solution.

(1) My test data is the same as yours.

(2) We can create measures. 

Period = 
var _min= CALCULATE(MIN('Table'[DateKey]),FILTER(ALLSELECTED('Table'),'Table'[ServiceLength_Months]=24 && 'Table'[ID]=MAX('Table'[ID])))
var _Period=CALCULATE(MAX('Table (2)'[Period]),FILTER(ALLSELECTED('Table (2)'),'Table (2)'[DateKey]=_min))
return _Period
Count = 
var _table=SUMMARIZE(ALL('Table'),'Table'[ID],"per",[Period])
return COUNTROWS(FILTER(_table,[per] = MAX('Table (2)'[Period])))

(3) Then the result is as follows.

 

If the above one can't help you get the desired result, please provide some sample data in your tables (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. Thank you.

 

Best Regards,

Neeko Tang

If this post  helps, then please consider Accept it as the solution  to help the other members find it more quickly. 

  • EWBWEBB's avatar
    EWBWEBB
    Helper III
    2 years ago

    Hi Anonymous 

     

    This worked perfectly thank you. 

     

    Is there a reason that you did this as 2 seperate measures rather than using a Variable for the 'Period' mesaure, or just preference?

     

    Just help inform my thinking next time. 

     

    Thanks

    Ben