Help with creating a function, multiple SelectRows and GroupBy

Hi Anonymous ,

let
  Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WstQ3MgAiI2MlHaWA1KLi/DwFQyDTRClWByxphEXSFCZpikXSAiZpjCZpBGQa49JphGysGRZJuIPMsUiaK8XGAgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [session_start = _t, session_user = _t, Daily_sum = _t]),
    #"Changed column type" = Table.TransformColumnTypes(Source, {{"session_start", type date}, {"session_user", type text}, {"Daily_sum", Int64.Type}}),

  CustomFunction = (user as text, n as number) as table =>
    let
      FilteredRows = Table.SelectRows(#"Changed column type", each [session_user] = user and Date.IsInPreviousNDays([session_start], n)),
      GroupedRows = Table.Group(FilteredRows, {"session_user"}, {{"Sum", each List.Sum([Daily_sum]), type nullable number}}),
      Result = if List.Min(GroupedRows[Sum]) < 10 then Table.AddColumn(GroupedRows, "Final N Value", each n) else @CustomFunction(user, n-1)
    in
      Result,

  Users = List.Distinct(#"Changed column type"[session_user]),
  Results = List.Transform(Users, each CustomFunction(_, 10)),
  FinalResult = Table.Combine(Results)
in
  FinalResult

Output:

If I've misunderstood your question, feel free to contact me.

Best Regards,
Gao
Community Support Team

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