formula

Hi Julier,

Try below DAX:-

Vol_Match =
CALCULATE(
MAX(Table[Vol]),
Table[ID] = "BEL_14667/0",
Table[forecast A] = Table[forecast b],
Table[forecast b] = DATE(2025,8,1)
)

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Hello !

Thank you for posting on Fabric community.

You can filter the table to just the rows where ID = BEL_14667/0 and forecastA = forecastB = #date(2025,8,1)
and from that filtered table, take the first match vol value if no row matches return null.

= let
    Source =
        #table(
            type table [ID = text, forecastA = date, forecastB = date, Vol = number],
            {
                {"BEL_14667/0", #date(2025, 7, 1), #date(2025, 7, 1), 232932},
                {"BEL_14667/0", #date(2025, 7, 1), #date(2025, 8, 1), 195613},
                {"BEL_14667/0", #date(2025, 7, 1), #date(2025, 9, 1), 239887},
                {"BEL_14667/0", #date(2025,10, 1), #date(2025,10, 1), 294476},
                {"BEL_14667/0", #date(2025,11, 1), #date(2025,11, 1), 327610},
                {"BEL_14667/0", #date(2025,12, 1), #date(2025,12, 1), 149035},
                {"BEL_14667/0", #date(2025, 8, 1), #date(2025, 8, 1), 220000},
                {"BEL_14667/0", #date(2025, 8, 1), #date(2025, 9, 1), 239887},
                {"BEL_14667/0", #date(2025, 8, 1), #date(2025,10, 1), 294476}
            }
        ),

    TargetID   = "BEL_14667/0",
    TargetDate = #date(2025, 8, 1),

    Filtered = Table.SelectRows(
        Source,
        each [ID] = TargetID and [forecastA] = TargetDate and [forecastB] = TargetDate
    ),

    ResultVol = if Table.IsEmpty(Filtered) then null else Filtered{0}[Vol]
in
    ResultVol

you can find the solution in the pbix file.