重复呼叫者 - Power BI 度量或计算列？

Question

I have a database of call details and need to get a count of calls that are repeat callers within a 2 day time frame. Picture of columns in DB table

I have attempted this in a couple different ways.

Calculated Column -

RC1 = 
CALCULATE(COUNTROWS(CallDetails),
    FILTER(CallDetails,
        CallDetails[Customer ID]=EARLIER(CallDetails[Customer ID]) &&
        CallDetails[Call Start Date]>=DATEADD(CallDetails[Call Start Date],2,day)))

Measure -

RC2 = 
CALCULATE(CallDetails[Incoming Call Count],
    FILTER( ALLEXCEPT(CallDetails,CallDetails[Customer ID])
    ,CallDetails[Call Start Date]<=DATEADD(CallDetails[Call Start Date],2,day)
   )
)

Neither have been correct and I have reached the end of my knowledge in DAX so far. How can this be done?

Answer 1

Try this measure :

RC1 =
VAR T1 =
    ADDCOLUMNS (
        CallDetails,
        "Count",
            CALCULATE (
                COUNTROWS ( CallDetails ),
                FILTER (
                    CallDetails,
                    CallDetails[Customer ID] = EARLIER ( CallDetails[Customer ID] )
                        && ABS ( CallDetails[Call Start Date] - EARLIER ( CallDetails[Call Start Date] ) ) <= 2
                )
            )
    )
VAR T2 =
    GROUPBY (
        T1,
        CallDetails[Customer ID],
        "MaxCount", MAXX ( CURRENTGROUP (), [Count] )
    )
RETURN
    SUMX ( T2, 0 + ( [MaxCount] > 1 ) )