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Benjamin_500's avatar
Benjamin_500
Advocate I
9 years ago
Solved

DATEDIFF Working Days

Hey all,

 

I am struggling on how to approach a problem,

 

I want to count the days between 2 dates, but only count working days.

 

My current formula is: DATEDIFF('Report'[DeliveryDate],NOW(),Day)

 

Which works fine, but obviously this will count the weekends, has anybody got an idea on how i would approach this?

 

Many Thanks.

Ben

Need Help
  • v-huizhn-msft's avatar
    v-huizhn-msft
    9 years ago

    Hi Benjamin_500,

    First you should create a holiday table including all holiday form Delivery start date to Today. Then create relationship between holiday table and your 'Repot' table. 

    I try to reproduce your scenario using date from 2017/1/1 to 2017/3/31.

    Search the holiday days for 2017, I use "List of federal Public Holidays of USA in 2017", and type it in Power BI table as followings.



    Create relationship between Holiday table and Date Table.



    Use WEEKDAY function to get weekdays, use RELATED function to get holidays. Use if function to decide if the day is work day.

     

    WeekDay = WEEKDAY(DateTable[Date])

Holiday = RELATED(Holiday[Holiday])

    If work day = IF(OR(DateTable[WeekDay]=1,DateTable[WeekDay]=7),0,IF(ISBLANK(DateTable[Holiday]),1,0))

     



    The 1 stands for the day is work day.

    Finally, create a measure to calculate the number od holidays. And create a card visual to display the result.

    Total work days = CALCULATE(COUNT(DateTable[Date]),FILTER(DateTable,DateTable[If work day]=1))



    If you have other issues, please let me know.

    Best Regards,
    Angelia

20 Replies

  • v-huizhn-msft's avatar
    v-huizhn-msft
    Microsoft Employee
    9 years ago

    Hi Benjamin_500,

    First you should create a holiday table including all holiday form Delivery start date to Today. Then create relationship between holiday table and your 'Repot' table. 

    I try to reproduce your scenario using date from 2017/1/1 to 2017/3/31.

    Search the holiday days for 2017, I use "List of federal Public Holidays of USA in 2017", and type it in Power BI table as followings.



    Create relationship between Holiday table and Date Table.



    Use WEEKDAY function to get weekdays, use RELATED function to get holidays. Use if function to decide if the day is work day.

     

    WeekDay = WEEKDAY(DateTable[Date])

Holiday = RELATED(Holiday[Holiday])

    If work day = IF(OR(DateTable[WeekDay]=1,DateTable[WeekDay]=7),0,IF(ISBLANK(DateTable[Holiday]),1,0))

     



    The 1 stands for the day is work day.

    Finally, create a measure to calculate the number od holidays. And create a card visual to display the result.

    Total work days = CALCULATE(COUNT(DateTable[Date]),FILTER(DateTable,DateTable[If work day]=1))



    If you have other issues, please let me know.

    Best Regards,
    Angelia

    • Benjamin_500's avatar
      Benjamin_500
      Advocate I
      9 years ago

      Hi v-huizhn-msft (Angelia)

       

      Thanks for this, however, this is an akward workaround, it relies on the table being updated every year and it being populated accuratly for a whole year to start with.  

      While we could make a central "Holidays" table for all users to link too, its the kind of thing that will always get left behind due to its low priority vs other tasks.

      I guess, coming from Tableau, where you just clicked on "Weekdays" and it worked it all out for you, I was looking for something much the same.

       

      Thank you for the idea, I will keep it in mind if i cant find a better solution.

       

      Kind Regards,

      Ben

       

       

       

      • Archie1's avatar
        Archie1
        Frequent Visitor
        8 years ago

        Hi prakashacharya,


        I am not sure if you have got your answer or not.

        Here is the answer,

         

        If you are planning to get total no. of days then you have to use COUNTROWS or SUM function in your main field.

         

         

        for example: Nofworkingdays_Month = CALCULATE(COUNTROWS('month'), Dimtable[if working day] =1)

         

        where, Month  = DATESINPERIOD('Calendar'[Date],[ThisMonth],1,MONTH)

                 ThisMonth = DATE(YEAR([Today]), MONTH([Today]),1)

                Today = DATE(YEAR(Now()), MONTH(NOW()), DAY(NOW()))

         

        For more details refer to this link: https://blog.andredevelopment.com/post/power-bi-desktop-fiscal-comparison-part-1-setting-up-for-the-comparisons

         

        Cheers, Archie

    • hmedinaa's avatar
      hmedinaa
      Frequent Visitor
      8 years ago

      I can no see where is the calculation to find the weeks days with the scenario using date from 2017/1/1 to 2017/3/31.

    • Andy_40's avatar
      Andy_40
      Regular Visitor
      6 years ago

      Hi,

       

      The problem is, this solution will not work if you want to see the difference between two timestamps and want to exclude the working days between them

       

      One probable solution as a temporary workaround is just taking

       

      1. The difference between two dates using Datediff and
      2. Subtracting this by creating another calendar which can provide the number of holidays between the dates.

       

      I think PowerBI should come up with Networkdays like excel 365 to make life easier for users

       

      Thanks

       

      Anand

      • CoreyP's avatar
        CoreyP
        Solution Sage
        6 years ago

        If you want to count the number of working days between two dates...just SUM the "Is Workday" column of your date table between the dates you want. 

         

        Ex) 

         

        Date     |     Is Workday

        1/1/19          0

        1/2/19          1

        1/3/19          1

        1/4/19          1

        1/5/19          1

        1/6/19          1

        1/7/19          0

         

  • Benjamin_500's avatar
    Benjamin_500
    Advocate I
    9 years ago

    Thanks all,

     

    I guess I was looking for a more automated solution, I found it odd that PowerBi does not have a calendar function built in. Given that Outlook is an MS updated calendar at regional levels.

     

    I suppose coming from Tableau and others like it, I expected it to be an included functionality. I understand holidays might be harder to work out, but I would have thought weekdays to be more straigt forward.

     

    Ill keep diggin and if i find anything of use ill post it back here.

     

    Thanks all,

    Ben

     

     

     

    • v-huizhn-msft's avatar
      v-huizhn-msft
      Microsoft Employee
      9 years ago

      Hi Benjamin_500，

      >>I found it odd that PowerBi does not have a calendar function built in.

      There is Calendar function in PowerBI, you can click New Table under Modeling on home page, create a date table using the calendar function.

      Best Regards,
      Angelia


      • Benjamin_500's avatar
        Benjamin_500
        Advocate I
        9 years ago

        v-huizhn-msft Hi Angela,

         

        Thanks for that, I did not know that yet, only been working with PBi for 2 weeks, so still finding my feet.

        I guess thats the best option for me then, but it does worry me about long terms datasets.

         

        My team build reports and dashboards for the rest of the company. I worry that if these do not auto populate each year, then I will be seeing a large amount of requests to fix date issues.

         

        I will have to have a think about how to approach this long term, but for now this should suit my needs.

         

        Thanks again,

        Ben

  • Anonymous's avatar
    Anonymous
    Not applicable
    4 years ago

    Ben - for a comprehensive Dates table, check out DAX Date Template - SQLBI. There are numerous resources on SQLBI.com and in YouTube talking about the "why" of a Dates table. There's a LOT of power and flexibility in this approach. Good luck!