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Anonymous's avatar
Anonymous
Not applicable
3 years ago
Solved

Help getting latest date for earlier value

I have a table containing Dates when Responsibility gets set, see below.

 

This Responsibility Set Date produces very close to what I'm trying to achieve: I want to capture the CreateDate any time the Responsibility changes:

 

But in cases where there are multiple records per responsibility, the _current (MIN) variable reverts back to the initial CreateDate. So, I get why it's producing the results it is, but am not sure how to get it to produce the desired results.

For the rows with red x's (Index rows 8 and 10), I need to see:

Index row 8 = 12/14/2022 3:39:28 PM (capturing the CreateDate of row 7 at Responsibility change)

Index row 10 = 12/20/2022 3:53:28 PM (capturing the CreateDate of row 9 at Responsibility change)

 

Here's the dax currently generating the Responsibility Set Date results. I'm sure this is a simple fix, but it's been vexing for hours. Any help would be appreciated!

Responsibility Set Date = 
VAR previous =
CALCULATE(
    DISTINCT(LOA_Logs[Responsibility]),
    LOA_Logs[Index per LOA] = (EARLIER(LOA_Logs[Index per LOA]) - 1),
    ALLEXCEPT(LOA_Logs, LOA_Logs[LOA_UID], LOA_Logs[Responsibility])
)
VAR _current =
CALCULATE(MIN(LOA_Logs[CreateDate]),
FILTER(LOA_Logs,
LOA_Logs[LOA_UID] = EARLIER(LOA_Logs[LOA_UID]) &&
LOA_Logs[Responsibility] = EARLIER(LOA_Logs[Responsibility]))
)

RETURN
IF(LOA_Logs[Responsibility] <> previous, LOA_Logs[CreateDate], _current)

 

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  • tamerj1's avatar
    tamerj1
    3 years ago

    Hi Anonymous 
    First create a calculated column as follows

    Index2 =
LOA_Logs[Index per LOA]
    - RANKX (
        CALCULATETABLE (
            LOA_Logs,
            ALLEXCEPT ( LOA_Logs, LOA_Logs[LOA_UID], LOA_Logs[Responsibility] )
        ),
        LOA_Logs[Index per LOA],
        ,
        ASC,
        DENSE
    )

    The the following can be either a measure or a calculated column

    Responsibility Set Date =
MINX (
    CALCULATETABLE (
        LOA_Logs,
        ALLEXCEPT ( LOA_Logs, LOA_Logs[LOA_UID], LOA_Logs[Index2] )
    ),
    LOA_Logs[CreateDate]
)

4 Replies

  • tamerj1's avatar
    tamerj1
    Icon for Community Champion rankCommunity Champion
    3 years ago

    Hi Anonymous 
    First create a calculated column as follows

    Index2 =
LOA_Logs[Index per LOA]
    - RANKX (
        CALCULATETABLE (
            LOA_Logs,
            ALLEXCEPT ( LOA_Logs, LOA_Logs[LOA_UID], LOA_Logs[Responsibility] )
        ),
        LOA_Logs[Index per LOA],
        ,
        ASC,
        DENSE
    )

    The the following can be either a measure or a calculated column

    Responsibility Set Date =
MINX (
    CALCULATETABLE (
        LOA_Logs,
        ALLEXCEPT ( LOA_Logs, LOA_Logs[LOA_UID], LOA_Logs[Index2] )
    ),
    LOA_Logs[CreateDate]
)
    • Anonymous's avatar
      Anonymous
      Not applicable
      3 years ago

      That did it tamerj1  - thanks so much for the assist!

  • amitchandak's avatar
    amitchandak
    Icon for Super User rankSuper User
    3 years ago

    Anonymous , Use Max in place of Min

     

    Responsibility Set Date =
    VAR previous =
    CALCULATE(
    DISTINCT(LOA_Logs[Responsibility]),
    filter(LOA_Logs, LOA_Logs[Index per LOA] = (EARLIER(LOA_Logs[Index per LOA]) - 1) &&
    LOA_Logs[LOA_UID] = earlier(LOA_Logs[LOA_UID]) && LOA_Logs[Responsibility] = earlier(LOA_Logs[Responsibility]) )
    )
    VAR _current =
    CALCULATE(MAX(LOA_Logs[CreateDate]),
    FILTER(LOA_Logs,
    LOA_Logs[LOA_UID] = EARLIER(LOA_Logs[LOA_UID]) &&
    LOA_Logs[Responsibility] = EARLIER(LOA_Logs[Responsibility]))
    )

    RETURN
    IF(LOA_Logs[Responsibility] <> previous, LOA_Logs[CreateDate], _current)

    • Anonymous's avatar
      Anonymous
      Not applicable
      3 years ago

      Thanks for the assist amitchandak, though unfortunately, this doesn't work. When I change MIN to MAX, I get a changing "Responsibility Set Date" even when the Responsibility field isn't changing. See below. In this screenshot, I'd expect rows 8-14 to all have Responsibility Set Date = 1/10/2023 3:59:38 PM.

      Open to other suggestions - thanks again!