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TimmK's avatar
TimmK
Icon for Helper IV rankHelper IV
3 years ago
Solved

How to Dynamically Subtract Variable Days?

For simplicity I have a table with the three columns "Order Key", "Date" and "Days".   I would like to use a DAX measure (or if this is not possible a calculated column) to subtract the days from t...
  • johnt75's avatar
    johnt75
    3 years ago

    You could create a measure like

    Adjusted date =
VAR ReferenceDate =
    SELECTEDVALUE ( 'Table'[Date] )
VAR ReferenceDays =
    SELECTEDVALUE ( 'Table'[Days] )
VAR BaseDate = ReferenceDate - ReferenceDays
VAR Result =
    SWITCH ( WEEKDAY ( BaseDate ), 1, BaseDate - 2, 7, BaseDate - 1, BaseDate )
RETURN
    Result
johnt75's avatar
johnt75
Icon for Super User rankSuper User
3 years ago

You could create a measure like

Adjusted date =
VAR ReferenceDate =
    SELECTEDVALUE ( 'Table'[Date] )
VAR ReferenceDays =
    SELECTEDVALUE ( 'Table'[Days] )
VAR BaseDate = ReferenceDate - ReferenceDays
VAR Result =
    SWITCH ( WEEKDAY ( BaseDate ), 1, BaseDate - 2, 7, BaseDate - 1, BaseDate )
RETURN
    Result
TimmK's avatar
TimmK
Icon for Helper IV rankHelper IV
3 years ago

johnt75 Ah, actually the last part unfortunately does not work as intended. For example, let us say the reference date is November 21, 2022 (Monday) and 3 days should be subtracted. Then based on your measure the result would be November 18, 2022 (Friday). However, it actually should be November 16, 2022 (Wednesday) because it should be 3 workdays earlier, which means November 21, 2022 - 2 weekend days - 3 workdays.

 

Could you please help with a solution?