Calculate Colunm get last invoice number from previous month

[CSpina]

Hi, people.

I need to create a "caculated column", if possible" with the last invoice number from previous month.

Example Data

let

    Fonte = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("fY9LCsMwDAWvUrwO+EmyPu5VQu5/jdh1MRSU7rQY5o3Os5CJG5ejULCr0bjYK7wymF7AGyjX8cMZ2H1yqIiUk+3jv77FmbTWJieJj9V1RpF31T4xaKLbWLQeTI+2YbEVh4jPKGe2jY1NrK8TWwi1b5uNgKe2jYUC0LTtugE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [CustomerID = _t, #"Invoice Number" = _t, Date = _t]),

    #"Tipo Alterado" = Table.TransformColumnTypes(Fonte,{{"CustomerID", Int64.Type}, {"Invoice Number", Int64.Type}, {"Date", type datetime}})

in

    #"Tipo Alterado"

 Any ideias?

[v-easonf-msft · Accepted solution]

Hi, @CSpina 

You can take a try the following formula.

Result = 
    CALCULATE (
        MAX ( Query1[Invoice Number] ),
        FILTER (
            Query1,
            Query1[CustomerID] = EARLIER ( Query1[CustomerID] )
                && Query1[Date] <EARLIER(Query1[Date])
        )
    )

If it doesn't meet your requirement,please share your expected result in excel.

Best Regards,
Community Support Team _ Eason