Single Wildcard with replace for text cleansing

[StephenF]

I wish to do as you would in excel's search replace:

Replace ~(ignore double quotes here)

" S1*"     - (S1 followed by a wildcard

to be replaced with "" ie no text

EG

"Mario S1 E1" Would be replaced with "Mario".

asterisk doesnt seem to work in replace values in the query editor however.

Any way to do the same?

[v-shex-msft]

Hi @StephenF ,

You can add a column with condition to replace value, please take a look at following query.

#"Added Custom" = Table.AddColumn(#"Changed Type", "Replace", each try if Text.Split([Text]," S1")<>null then Text.Split([Text]," S1"){0} else [Text] otherwise [Text])

Full query:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8k0sysxXCDZUcDVUitWJVgpJLS4Bco3AHLgkRM7RyRXESS1CkdQyMlWKjQUA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type text) meta [Serialized.Text = true]) in type table [Text = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Text", type text}}),
    #"Added Custom" = Table.AddColumn(#"Changed Type", "Replace", each try if Text.Split([Text]," S1")<>null then Text.Split([Text]," S1"){0} else [Text] otherwise [Text])
in
    #"Added Custom"

Regards,

Xiaoxin Sheng

[Zubair_Muhammad · Accepted solution]

@StephenF 

You can use Extract Text Before Delimiter and specify "S1" there

[StephenF]

@Zubair_Muhammad  Strictly this works, but if i chain a bunch of these it only picks up the last one.

The procession doesnt save the progress of the transformation on the string after each step for this function which is a bit unusual.

eg:

    #"Extracted Text Before Delimiter1" = Table.TransformColumns(#"Replaced Value", {{"Programme Name", each Text.BeforeDelimiter(_, " S1"), type text}}),
    #"Extracted Text Before Delimiter2" = Table.TransformColumns(#"Replaced Value", {{"Programme Name", each Text.BeforeDelimiter(_, " S3"), type text}}),
    #"Extracted Text Before Delimiter3" = Table.TransformColumns(#"Replaced Value", {{"Programme Name", each Text.BeforeDelimiter(_, " S4"), type text}}),
    #"Extracted Text Before Delimiter4" = Table.TransformColumns(#"Replaced Value", {{"Programme Name", each Text.BeforeDelimiter(_, " S5"), type text}}),

EDIT: Oh right I need to change  #"Replaced Value" to point to previous row also on each row for it to work !