Forum Discussion

handrianto's avatar
handrianto
New Member
9 years ago
Solved

inconsistent weekend weekday DAX calculated value

I use DAX function: GetWeekDay = WEEKDAY(WEEKDAY([DropOffTimeLocal].[Date],2)) to get the weekday value. Apparently, it has  different result for the same day. for the same March 3, 2017 and March 10, 2017. the weekday function return 2 different values. wheres it is a Friday (value 5), instead some of them return Saturday (value 6)

 

 

Is it a bug in function or not ?

 

Thanks a lot for your response..

Data Modeling
  • v-qiuyu-msft's avatar
    v-qiuyu-msft
    9 years ago

    Hi handrianto,

     

    I notice that the date place in the table visual is [PickUpTimeLocal], while the GetWeekDay = WEEKDAY([DropOffTimeLocal].[Date],2).

     

    And I also find there are records [PickUpTimeLocal] date is not equal to the [DropOffTimeLocal] date. As you compare the [PickUpTimeLocal] date with the weekday value from the [DropOffTimeLocal], the result you get is expected.

     

     

    Best Regards,
    Qiuyun Yu

4 Replies

  • v-qiuyu-msft's avatar
    v-qiuyu-msft
    Community Support
    9 years ago

    Hi handrianto,

     

    I notice that the date place in the table visual is [PickUpTimeLocal], while the GetWeekDay = WEEKDAY([DropOffTimeLocal].[Date],2).

     

    And I also find there are records [PickUpTimeLocal] date is not equal to the [DropOffTimeLocal] date. As you compare the [PickUpTimeLocal] date with the weekday value from the [DropOffTimeLocal], the result you get is expected.

     

     

    Best Regards,
    Qiuyun Yu

    • handrianto's avatar
      handrianto
      New Member
      9 years ago

      Ah.. How can I do such silly mistake.. I copy paste the DAX from other BI report and forgot to change the column reference from droptime into pickuptime. didn't catch that for 2 days.

       

      Thank you very much for your help Quiyu..

  • v-qiuyu-msft's avatar
    v-qiuyu-msft
    Community Support
    9 years ago

    Hi handrianto,

     

    In your scenario, please remove the one WeekDay() function and keep only one like below:

     

    GetWeekDay = WEEKDAY(WEEKDAY([Date].[Date],2))

     

    Also please try to run the desktop version latest one 2.46.4732.721 64-bit (May 2017). If issue persists, please share .pbix file if possible.

     

    Best Regards,
    Qiuyun Yu

  • handrianto's avatar
    handrianto
    New Member
    9 years ago

    Hi Qiuyun Yu, Thanks for the response. I've already update PBI Desktop to the latest update May 2017. I've corrected the DAX function (silly me) as you suggest. GetWeekDay = WEEKDAY([DropOffTimeLocal].[Date],2). but apparently after re-run the function and I checked the table test result; it is still the same.

    in fact now I notice it is randomly occur in other dates.

     

    DAX functionPBI Desktop Version8 march9 March10 March