cumulative days using DAX - Why is it so easy in Excel but not in DAX?

[Rickstor]

Hi. 

Please help me with this task: 

I need to create a cumulative days (measure) and days between (measure). I need these measures to use them in a table visual.
Like this:

'cum_days' is the name of measure. 

'days_between' is another measure that I need. 

In this model, I have a date table with relationship with my principal table. 

In Excel is so easy to do. 

But in DAX I have tried so many ways and I can't. 

[v-zhangti · Accepted solution]

Hi, @Rickstor 

You can try the following methods.
Measure:

days_between =
DATEDIFF (
    MAXX ( FILTER ( ALL ( 'Table' ), [Date] < SELECTEDVALUE ( 'Table'[Date] ) ), [Date] ),
    SELECTEDVALUE ( 'Table'[Date] ),
    DAY
)

cum_days = SUMX(FILTER(ALL('Table'),[Date]<=SELECTEDVALUE('Table'[Date])),[days_between])

Is this the result you expect?

Best Regards,

Community Support Team _Charlotte

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[Mahesh0016]

@Rickstor 
Running Total MEASURE =

 CALCULATE(

     [Total Sales],

     FILTER(

            ALLSELECTED(financials[Date]),

            financials[Date]<=MAX(financials[Date])

     )

 )

ELSE
Running Total MEASURE =
CALCULATE ( [Total Sales], Date[Date] <= MAX ( Date[Date] ) )

[johnt75]

You could create measures like

Cumulative days =
VAR MinDate =
    CALCULATE ( MIN ( 'Table'[Date] ), ALLSELECTED ( 'Table' ) )
VAR CurrentDate =
    SELECTEDVALUE ( 'Table'[Date] )
VAR Result =
    DATEDIFF ( MinDate, CurrentDate, DAY )
RETURN
    Result

Days between =
VAR CurrentDate =
    SELECTEDVALUE ( 'Table'[Date] )
VAR Dates =
    ALLSELECTED ( 'Table'[Date] )
VAR PrevDate =
    OFFSET ( -1, Dates, ORDERBY ( 'Table'[Date], DESC ) )
VAR Result =
    DATEDIFF ( PrevDate, CurrentDate, DAY )
RETURN
    Result