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Anonymous's avatar
Anonymous
Not applicable
9 years ago
Solved

Calculate retained customers over time

I have a transactional table that records a customer record over time.  Customers come in and out over time and I'd like to calculate how many are kept from some starting point.

 

For example, if you arrive in period 1, did you return in period 2 or subsequent periods.

Table:

CustomerIDPeriodID
12341
13451
25671
36781
48901
57891
68901
54211
12342
13452
25672
11112
22222
68902
36783
11113

 

Outcome:

First PeriodPeriodRetained Customers% Retained
118100%
12338%
13113%

 

I tried a bi-directional join through a table of all unique customerid's and a copy of the original table but the results were incorrect.  Hope this makes sense.  Thanks.

Need Help
  • v-yulgu-msft's avatar
    v-yulgu-msft
    9 years ago

    Hi Anonymous,

     

    In your sceario, do you only need to count the retained customers start from PeriodId 1?

     

    If so, please refer to below DAX formula to see whether it works for you.

    Column1 =
LOOKUPVALUE (
    'retained over time'[CustomerID],
    'retained over time'[CustomerID], 'retained over time'[CustomerID],
    'retained over time'[PeriodID], 'retained over time'[PeriodID] - 1
)

Column2 =
IF (
    'retained over time'[PeriodID] = 1,
    CALCULATE (
        DISTINCTCOUNT ( 'retained over time'[CustomerID] ),
        FILTER ( 'retained over time', 'retained over time'[PeriodID] = 1 )
    ),
    CALCULATE (
        COUNT ( 'retained over time'[Column1] ),
        ALLEXCEPT ( 'retained over time', 'retained over time'[PeriodID] )
    )
)

    Regards,
    Yuliana Gu

2 Replies

  • Greg_Deckler's avatar
    Greg_Deckler
    Icon for Community Champion rankCommunity Champion
    9 years ago

    Perhaps something along the lines of this:

     

    Customers Retained = IF(SUM(Customers[PeriodID])=1,COUNT([PeriodID]),COUNT([PeriodID]) - CALCULATE(COUNT([PeriodID]),ALL(Customers[CustomerID]),FILTER(Customers,[PeriodID]=[PeriodID]-1)))

    That isn't the entire solution because it doesn't match customer id's but may get you close.

     

  • v-yulgu-msft's avatar
    v-yulgu-msft
    Icon for Microsoft Employee rankMicrosoft Employee
    9 years ago

    Hi Anonymous,

     

    In your sceario, do you only need to count the retained customers start from PeriodId 1?

     

    If so, please refer to below DAX formula to see whether it works for you.

    Column1 =
LOOKUPVALUE (
    'retained over time'[CustomerID],
    'retained over time'[CustomerID], 'retained over time'[CustomerID],
    'retained over time'[PeriodID], 'retained over time'[PeriodID] - 1
)

Column2 =
IF (
    'retained over time'[PeriodID] = 1,
    CALCULATE (
        DISTINCTCOUNT ( 'retained over time'[CustomerID] ),
        FILTER ( 'retained over time', 'retained over time'[PeriodID] = 1 )
    ),
    CALCULATE (
        COUNT ( 'retained over time'[Column1] ),
        ALLEXCEPT ( 'retained over time', 'retained over time'[PeriodID] )
    )
)

    Regards,
    Yuliana Gu