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NewbieJono's avatar
NewbieJono
Post Partisan
4 years ago
Solved

Difference in previous week

i have a table with a total snapshot on friday e.g 100. what dax would i need to show the increase or decrease from previous friday.    
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  • goncalogeraldes's avatar
    goncalogeraldes
    4 years ago

    Hello there NewbieJono ! Imagining you are adding up the values for a column the Dax would be as follows:

     

    Total_value =
CALCULATE(
SUM(Table[Column]),
DATEADD(Date_Table[Date_Column], -7, DAY)
)

     

    Hope this answer solves your problem!
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    Gonçalo Geraldes

sm_talha's avatar
sm_talha
Resolver II
4 years ago

You can add Relative Week column into your date table and calculate total snapshot for last week and current week then the difference between both weeks. 

 

For Relative Week add following columns to date table:  

StartOfWeek = DimDate[Date] - WEEKDAY(DimDate[Date],2) + 1

StartOfCurrentWeek = TODAY() - WEEKDAY(TODAY(),2) + 1

RelativeWeek = (DimDate[StartOfWeek] - DimDate[StartOfCurrentWeek])/7

 

Now can create a measure to calculate weekly difference: 

 

WoW DIff = 

WoW diff =
VAR past_week =
    CALCULATE( [Total Cost], 'Date'[Relative Week] = -1 )
VAR cur_week =
    CALCULATE( [Total Cost], 'Date'[Relative Week] = 0 )
RETURN
    cur_week - past_week