Filtering a table based on the maximum value of a column

Hi, bkermen 

Try this:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WclTSUTIEYiMgNgZiA6VYHYgoTMQErAImChMxBasAiTphNcEJqwnOWNW6YIrGAgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Name = _t, #"Col 2" = _t, #"Col 3" = _t, #"Col 4" = _t, #"Revision no" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Name", type text}, {"Col 2", type text}, {"Col 3", type text}, {"Col 4", type text}, {"Revision no", Int64.Type}}),

    
    T2=Table.Group(#"Changed Type", {"Name"}, {{"max", each List.Max([Revision no]), type nullable number}}),
    #"Merged Queries" = Table.NestedJoin(#"Changed Type", {"Name", "Revision no"}, T2, {"Name", "max"}, "Table (2)", JoinKind.LeftOuter),
    #"Expanded Table (2)" = Table.ExpandTableColumn(#"Merged Queries", "Table (2)", {"max"}, {"Table (2).max"}),
    #"Filtered Rows" = Table.SelectRows(#"Expanded Table (2)", each ([#"Table (2).max"] <> null)),
    #"Removed Columns" = Table.RemoveColumns(#"Filtered Rows",{"Table (2).max"})
in
    #"Removed Columns"

Result:

Please refer to the attachment below for details. Hope this helps.

Best Regards,
Community Support Team _ Zeon Zheng

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