Extract substring from another column in Power Query

[jacquelineq]

Hi, I have a column containing pdf filenames and I want to be able to extract text containing 'BODNNNNNNN' where N represents any single number. Is it possible to create a new custom column in Power Query?

BOD PDF filename		Expected Output
File1.pdf
File_BOD1234567_1.pdf		BOD1234567
BOD7654321_final_1.pdf		BOD7654321
BOD5555555(22Jan).pdf		BOD5555555

Appreciate any advice! Thanks!

[Vijay_A_Verma · Accepted solution]

In a custom column, use following

= [s=Text.Middle([BOD PDF filename],Text.PositionOf([BOD PDF filename],"BOD"),10),
r = try if Value.Is(Number.From(Text.End(s,7)), type number) then s else null otherwise null][r]

See the working here - Open a blank query - Home - Advanced Editor - Remove everything from there and paste the below code to test  

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcsvMSTXUK0hJU4rVgfDinfxdDI2MTUzNzOMRMkBBczNTE2Mjw/i0zLzEHFQpUwjQMDLySszTRJZRio0FAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"BOD PDF filename" = _t]),
    #"Added Custom" = Table.AddColumn(Source, "Custom", each [s=Text.Middle([BOD PDF filename],Text.PositionOf([BOD PDF filename],"BOD"),10),
r = try if Value.Is(Number.From(Text.End(s,7)), type number) then s else null otherwise null][r])
in
    #"Added Custom"

[jacquelineq]

Thank you so much!! 👍