PBI Destktop changes M script during upload csv from Azure Datalake

[Johan]

I have a file from azure datalake that is uploaded in PBI.

PBI automatically creates various scripts, li,ke:

let
Source = DataLake.Contents("adl://tenant.azuredatalakestore.net/Folder/File.csv"),
Navigation1 = Source{0}[Content],
in
Navigation1

However, when refreshing in PBI desktop, the script is transferred to:

let
Source = DataLake.Contents("adl://tenant.azuredatalakestore.net/Folder/File.csv"),
Navigation1 = Source{0}[Content],
#"Imported CSV" = Csv.Document(Navigation1,[Delimiter=":", Columns=19, Encoding=1252, QuoteStyle=QuoteStyle.None]),
#"Changed Type" = Table.TransformColumnTypes(#"Imported CSV",{{"Column1", type text}, {"Column2", Int64.Type})
in
#"Changed Type"

And this is wrong, it should not change.

How to avoid this?

Thanks,

Johan

[v-sihou-msft · Accepted solution]

@Johan

In this scenario, what your first returns just the entire content. Power BI Destkop just detected the delimiter automatically and parse the content to split it into multiple columns. It will always generate that step for CSV source, you can't avoid it. 

If you just want to keep the content into one column, I suggest you open that CSV file in Excel, then mauanlly combine those column into a single one, or you can add a step in Query Editor to Merge Columns together. 

Regards,