Custom Function Add column for each binary

[KimberlyF]

I'm working on an agg table, and I need to add a column (from the binary) to the initial table.

I want to do it without doing all of the combining and expanding and all other transforms - just need the one column - which happens to be an extraction of characters from one field in the file.

Here is my initial table...

and here is the drilldown of the binary to get to what I want...

Content = #"Removed Other Columns"{0}[Content],
#"Imported Text" = Table.FromColumns({Lines.FromBinary(Content,null,null,1252)}),
#"Extracted Text Before Delimiter" = Table.TransformColumns(#"Imported Text", {{"Column1", each Text.BeforeDelimiter(_, "|"), type text}}),
#"Renamed Columns" = Table.RenameColumns(#"Extracted Text Before Delimiter",{{"Column1", "RecordType"}})

I beleive I can do a function to add this column for each of the binary.
Can anyone please provide the function to add column to my original table?

I'll then delete the binary column and do some aggregating.

Thank you!
 

[v-jingzhang · Accepted solution]

Hi @KimberlyF 

Your idea is doable. You can create a blank query and paste below code into it. This query will become a custom function which has a parameter paraContent requiring a binary value. 

(paraContent as binary)=>
let
#"Imported Text" = Table.FromColumns({Lines.FromBinary(paraContent,null,null,1252)}),
#"Extracted Text Before Delimiter" = Table.TransformColumns(#"Imported Text", {{"Column1", each Text.BeforeDelimiter(_, "|"), type text}}),
#"Renamed Columns" = Table.RenameColumns(#"Extracted Text Before Delimiter",{{"Column1", "RecordType"}})
in
#"Renamed Columns"

Then in the initial query, click "Invoke Custom Function" beneath Add Column tab. In Invoke Custom Function window, select above function and select Content column for the paraContent parameter. 

In the new column, you will have a table value in each cell. This table value is the result of the custom function. 

Best Regards,
Community Support Team _ Jing
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