topic Re: Comparing partial week to last year partial week when number of days in week are different in DAX Commands and Tips

Comparing partial week to last year partial week when number of days in week are different

bobbyd — Fri, 19 Jul 2024 15:21:37 GMT

I'm stuck on how to figure this out.

I have a slicer for fiscal week end date and a table that displays for each week end date the week days and then compares to last fiscal year week. Each fiscal week end date is always a Saturday.

So for week ending 9/2/2023, the days are Friday 9/1/2023 to Saturday 9/2/2023. The last fiscal year week is Thursday 9/1/2022 to Saturday 9/3/2022.

So, my table ends up only showing Friday and Saturday because my slicer selection is week end 9/2/2023, which only contains 2 days. Last year Thursday 9/1/2022 is only included the computed total line. I have the correct calculations to get last fiscal week numbers, but the "Thursday" row, I can't figure out how to get to display.

I'm wanting to basically always show all 7 days on the table, with blanks where appropriate. I've tried a disconnected table for the 7 days in a week, but could not figure out how to get the calculation for total sales to work for each day of the disconnected table.

This is only an issue when the first week of fiscal year is a partial week or last week of fiscal year is a partial week.

Need some pointers on how to do this.

Bob

Re: Comparing partial week to last year partial week when number of days in week are different

Sahir_Maharaj — Fri, 19 Jul 2024 15:37:59 GMT

Hello bobbyd,

Can you please try the following approach:

1. Create a Disconnected Table for the Days of the Week

DaysOfWeek = DATATABLE( "Day", STRING, { {"Sunday"}, {"Monday"}, {"Tuesday"}, {"Wednesday"}, {"Thursday"}, {"Friday"}, {"Saturday"} } )

2. Create a measure to calculate the total sales for each day

TotalSalesByDay = VAR SelectedEndDate = SELECTEDVALUE('Calendar'[Fiscal Week End Date]) VAR SelectedStartDate = SelectedEndDate - 6 VAR SalesForDay = CALCULATE( SUM('Sales'[Amount]), FILTER( 'Calendar', 'Calendar'[Date] >= SelectedStartDate && 'Calendar'[Date] <= SelectedEndDate && 'Calendar'[DayName] = SELECTEDVALUE(DaysOfWeek[Day]) ) ) RETURN SalesForDay

Hope this helps.

Re: Comparing partial week to last year partial week when number of days in week are different

bobbyd — Wed, 24 Jul 2024 17:23:33 GMT

Thanks. It wasn't the exact solution for me, but it helped me get to my solution.

Thanks,

Bob