Match strings only composed of digits or letters, and remove the unwanted chars?

[PowerBtm]

Hi! I need some help with Powerquery. I'm trying to remove all extraneous characters from a given input string so that there are only digits and letters left, but I don't really know if that's possible without access to regex. Does anyone have any ideas?

[CNENFRNL · Accepted solution]

Simple enough,

= Text.Select("!~cl3509af;J8Ea""@6O4c", {"0".."9","a".."z","A".."Z"})

[AlB]

Hi @PowerBtm 

Place the following M code in a blank query to see the steps.

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WKix3UDY0MlZxC1KKjQUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Column1 = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Column1", type text}}),
    
#"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each List.Select(Text.ToList([Column1]), each List.Contains({"A".."Z"} & {"a".."z"} & {"0".."9"}, _))),

    #"Extracted Values" = Table.TransformColumns(#"Added Custom", {"Custom", each Text.Combine(List.Transform(_, Text.From)), type text})
in
    #"Extracted Values"

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