Return nearest Date value from another table, filtering

[Anonymous]

Hello!

I have a table 'A' with [ID]; [Name]; [Start Date Planned] and [Finish Date Planned]

And a table 'B' with [ID]; [Name]; [Start Date Acomplished] and [Finish Date Acomplished]

In the table 'A' I must create a new column matching [ID] and [Name] from table 'B' and returning the nearest [Start Date Acomplished] and the nearest [Finishi Date Acomplished] based on start and finish planned dates as reference.

Acomplished dates can be for more or less, so I don't know how to do this, because this could be MAX or MIN values. The thing must returns the closest value does not matter if it is higher or not.

Please help.

[AlB]

Hi @Anonymous

Try this for your columns, at least for the general idea. I haven't tested it. If you post sample data I'd be able to.

NearestStartDateAccomplished =
VAR _Dates =
    CALCULATETABLE (
        VALUES ( TableB[Start Date Acomplished] ),
        FILTER ( TableB, TableB[ID] = TableA[ID] && TableB[Name] = TableA[Name] )
    )
VAR _MinDiffDatesPrior =
    MINX (
        FILTER ( _Dates, [Start Date Acomplished] < TableA[Start Date Planned] ),
        ABS ( TableA[Start Date Planned] - [Start Date Acomplished] )
    )
VAR _MinDiffDatesPost =
    MINX (
        FILTER ( _Dates, [Start Date Acomplished] >= TableA[Start Date Planned] ),
        ABS ( TableA[Start Date Planned] - [Start Date Acomplished] )
    )
VAR _DatedDiff =
    IF (
        _MinDiffDatesPrior < _MinDiffDatesPost,
        -1 * _MinDiffDatesPrior,
        _MinDiffDatesPost
    )
RETURN
    TableA[Start Date Planned] + _DatedDiff

NearestFinishDateAccomplished =
VAR _Dates =
    CALCULATETABLE (
        VALUES ( TableB[Finish Date Acomplished] ),
        FILTER ( TableB, TableB[ID] = TableA[ID] && TableB[Name] = TableA[Name] )
    )
VAR _MinDiffDatesPrior =
    MINX (
        FILTER ( _Dates, [Finish Date Acomplished] < TableA[Finish Date Planned] ),
        ABS ( TableA[Finish Date Planned] - [Finish Date Acomplished] )
    )
VAR _MinDiffDatesPost =
    MINX (
        FILTER ( _Dates, [Finish Date Acomplished] >= TableA[Finish Date Planned] ),
        ABS ( TableA[Finish Date Planned] - [Finish Date Acomplished] )
    )
VAR _DatedDiff =
    IF (
        _MinDiffDatesPrior < _MinDiffDatesPost,
        -1 * _MinDiffDatesPrior,
        _MinDiffDatesPost
    )
RETURN
    TableA[Finish Date Planned] + _DatedDiff