FIRSTDATE and LASTDATE functions broken?

HI sanimesa,

I'm not so sure why firstdate and lastdate function not works on your side. (I test with last version without any issue)

Can you please share pbix file to test?

In addition, you can also try to use below formula to instead:

Invoice Date Selected =
"Reporting Period: "
    & FORMAT (
        MINX ( ALLSELECTED ( InvoiceTable[InvoiceDate] ), [InvoiceDate] ),
        "MMMM DD, YYYY"
    )
    & " - "
    & FORMAT (
        MAXX (
            ALLSELECTED ( Reporting_JSG_ConsolidatedOrders[InvoiceDate] ),
            [InvoiceDate]
        ),
        "MMMM DD, YYYY"
    )

Regards,

Xiaoxin Sheng

HI sanimesa,

After checking your pbix file, I found it similar as @KHorseman said, 'firstdate' and 'lastdate' function not works if your date table contains duplicate records.

I modify my formula and current it can works on your scenario, please take a look at below formula:

Invoice Date Selected =
"Reporting Period: "
    & FORMAT (
        MINX ( VALUES ( Sheet2[InvoiceDate] ), [InvoiceDate] ),
        "MMMM DD, YYYY"
    )
    & " - "
    & FORMAT (
        MAXX ( VALUES ( Sheet2[InvoiceDate] ), [InvoiceDate] ),
        "MMMM DD, YYYY"
    )

Regards,
Xiaoxin Sheng