Need Last Week data using DAX

[Sudharshan1919]

Hi ,

I have a data of showing day wise incidents (ticket). We are maintaining this things in excel sheet. My Requirement is to show the last weeks data (not last 7 days). 

Can someone help how do we write the formula to get the last week data. Day begins from Mon to Sun.

Thanks,

Sudharshan

[v-jayw-msft · Accepted solution]

Hi @Sudharshan1919 ,

If you just want to compare data from the same year:

Measure =
CALCULATE (
    SUM ( 'table'[value] ),
    FILTER (
        ALLSELECTED ( 'table' ),
        YEAR ( 'table'[date] ) = YEAR ( MAX ( 'table'[date] ) )
            && WEEKNUM ( 'table'[date], 2 ) = WEEKNUM ( MAX ( 'table'[date] ), 2 )
    )
)

If you just want to compare data across years, you will need to create a year_week column then create a rank column based on it.

year_week = YEAR('table'[date])*100+WEEKNUM('table'[date],2)

_rank = RANKX('table','table'[year_week],,ASC,Dense)

Measure =
CALCULATE (
    SUM ( 'table'[value] ),
    FILTER ( ALLSELECTED ( 'table' ), 'table'[_rank] = MAX ( 'table'[_rank] ) - 1 )
)

Best Regards,

Jay

[Greg_Deckler]

@Sudharshan1919 This is easiest if you create a Sequential week column. Then you don't have to worry about years and years having 52 or 53 weeks in them.

Sequential - Microsoft Power BI Community