Conditional Index

Hi Anonymous ,

According to your description, here's my solution.

Sample:

1.Add a new step in advanced editor.

= Table.Group(#"Changed Type", {"Column"}, {{"Index", each  Table.AddIndexColumn(_, "Index", 1, 1, Int64.Type)}})

2.Expand the new column with selecting the Index column.

Result:

Here's the whole M syntax:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcnQ0M1SK1UFlmOJkmJshMWIB", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column", type text}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"Column"}, {{"Index", each  Table.AddIndexColumn(_, "Index", 1, 1, Int64.Type)}}),
    #"Expanded Index" = Table.ExpandTableColumn(#"Grouped Rows", "Index", {"Index"}, {"Index.Index"})
in
    #"Expanded Index"

I attach my sample below for your reference.

Best Regards,
Community Support Team _ kalyj

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