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  • In the Query Editor, select the date column. Go to the Add column tab. Under the Date button on the right side of the ribbon, select Week, then week of the year. That's the week number equivalent.
  • Rashid, didn't catch, replacement of what? WEEKNUM in DAX works fine, or you mean Power Query? Here is also some function.
    • Rashid Mohammed's avatar
      Rashid Mohammed
      Brass Contributor

      When I Go Edit Query Mode add a custom column and add the formula =WEEKNUM(Date,1) it gives me an error but It all works fine If I add the column directly from Report page. 

    • Rashid Mohammed's avatar
      Rashid Mohammed
      Brass Contributor
      I am trying to get the WEEKNUM from a date column by adding a custom column in power BI. "WEEKNUM([Date],2)" gives me an error in Power BI "Expression error: The name 'WEEKNUM' wasn't recognized. Make sure it's spelled correctly."

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