A function on a list

Hi Netrelemo ,

Try the following function:

let
    Source = (EnterTable  as any, EnterColumn as any)  => List.Max(Table.Column(EnterTable, EnterColumn as text))
     
in
    Source

Then invoking function MaxValue:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjIwMtQFQiUdJUMDAyDpqBSrAxU2BQubgkSdEaJmUMVAwkkpNhYA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Period = _t, Value = _t, Column2 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Period", type date}, {"Value", Int64.Type}, {"Column2", type text}}),
    #"Max Value" = MaxValue(#"Changed Type","Period")

in
    #"Max Value"

If the problem is still not resolved, please provide detailed error information or the expected result you expect. Let me know immediately, looking forward to your reply.

Best Regards,
Winniz

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