Forum Discussion

POSPOS's avatar
POSPOS
Post Partisan
2 years ago
Solved

Calculate date difference without aggregating using DAX

Hi All,

I have a requirement to calculate the difference between two dates. Please find sample data below:

 

ProtocolStart DateStatusEnd Date
A9/26/2022In-Progress11/20/2022
A9/26/2022Closed11/20/2022
B3/3/2022In-Progress4/12/2022
B3/3/2022Testing4/12/2022
B3/3/2022Closed4/12/2022

 

Expected Output:

ProtocolNo.of days
A55
B40


Wrong output that I am getting:

ProtocolNo.of days
A110
B120



Issue is that, the no. of days are been aggregared.


Eg:  No. of days between 9/26/2022 and 11/20/2022 for protocol A is 55. But since there are two satutses for a single protocol, the days are getting aggregated resulting in 110.

I have created a new column with below dax.

 

 

newcolumn=datediff([startdate],[enddate],day)

 

 

Removing the 'Don't Summarize' option did not work as I will be using this to calcualte the Average.
Expected Average is (55+40)/2=47.5 but I get (110+120)/2=115

 

Could someone please advise on how to achieve this using DAX.

Thank you.

  • Anonymous's avatar
    Anonymous
    2 years ago

    Simplest dax can be as follows.

    SUMX(SUMMARIZE('Table','Table'[protocol],'Table'[start],'Table'[end],"datediff",DATEDIFF('Table'[start],'Table'[end],DAY)),[datediff]).

     

    This will give you was u required.

    Summarize is good approach to avoid certain columns which creates aggregation or double dip on values 

7 Replies

    • POSPOS's avatar
      POSPOS
      Post Partisan

      Idrissshatila  - Not all are having the same list of statuses. Some of them may still be open.

      • POSPOS's avatar
        POSPOS
        Post Partisan

        Idrissshatila : Restricting by one statuses may not work for the data that we have as we have some of the protocols which are directly approved and hence they just have one status called 'approved' without open/close/in-progress. 
        Each of them may have a different criteria of statuses/

    • Anonymous's avatar
      Anonymous
      Not applicable

      Simplest dax can be as follows.

      SUMX(SUMMARIZE('Table','Table'[protocol],'Table'[start],'Table'[end],"datediff",DATEDIFF('Table'[start],'Table'[end],DAY)),[datediff]).

       

      This will give you was u required.

      Summarize is good approach to avoid certain columns which creates aggregation or double dip on values 

      • POSPOS's avatar
        POSPOS
        Post Partisan

        Anonymous - thank you for the response. This solution worked.