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timstacy1's avatar
timstacy1
Frequent Visitor
9 years ago
Solved

Find the Distinct Value based on other columns

Hi,   I want to create a dax formula that will produce a list of unique guest values from Column A, and find only the distinct value in column B (Host) based on the latest date.  The final report w...
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  • v-ljerr-msft's avatar
    v-ljerr-msft
    9 years ago

    Hi timstacy1,

     

    It seems that there are some Guests have multiple Hosts with the same last Report Date. For example, Server A has both Host A and Host B with the last report date 04/17/2017 in your table like below.

     

    Guest Host Report Date
    server A Host A 4/17/2017
    server A Host B 4/17/2017
    server A Host C 4/3/2017
    server A Host D 3/20/2017
    server A Host E 2/20/2017
    server A Host F 2/13/2017

     

    So what's your expected result in this scenario, show only Host A, or both Host A and B for Server A in the list?

     

    If you still need a list of distinct guests and one host per guest, the formula below show work in your scenario. :smileyhappy:

     

    HostLatestReport =
CALCULATE (
    FIRSTNONBLANK ( Table2[Host], 1 ),
    FILTER (
        ALLEXCEPT ( Table2, Table2[Guest] ),
        Table2[Report Date] = [LatestReport]
    )
)

     

    Regards

  • v-ljerr-msft's avatar
    v-ljerr-msft
    9 years ago

    Hi timstacy1,

     

    Glad to help! Could you accept helpful replies as solution to close this thread? :smileyhappy:

     

    Regards

Vvelarde's avatar
Vvelarde
Icon for Community Champion rankCommunity Champion
9 years ago

timstacy1

 

Hi Friend, Check this measure:

 

LatestReport =
CALCULATE ( MAX ( Table2[Report Date] ), ALLEXCEPT ( Table2, Table2[Guest] ) )

 

 

HostLatestReport =
CALCULATE (
    VALUES ( Table2[Host] ),
    FILTER (
        ALLEXCEPT ( Table2, Table2[Guest] ),
        Table2[Report Date] = [LatestReport]
    )
)