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-caliao-msft · Accepted solution]

@Johan,

 When connecting to a data srouce in Power BI Desktop, data type will be changed in Power Query automatically based on your data. If this data type is not what you want, you could change the data type in Power Query and check if this issue persists or not.

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"

Regards,

Charlie Liao