Forum Discussion
Retain file name column when using Folder as a data source - Power Query M
Actually, it's pretty easy with this line of code:
= Table.AddColumn(Source, "Custom", each Table.PromoteHeaders(Csv.Document([Content],[Delimiter=";", Encoding=1252])))
Replace your Step 2&3 with it.
It will retain all the metadata from the 1st step and add the content in an additional custom column.
If your csv's have all the same headers, you simply expand this column and the headers of the 1st file will be shown - and expand all other files on these cols as well.
If there are differnt cols - just come back & I'll post the code for the auto-expand of different headers.
It is not clear to me what you are actually doing. Could you please share the M-code that has been created so far (from the advanced editor).
Here is where I am at:
let
Source = Folder.Files("C:\Users\pbakaric\Google Drive\DFM Dashboard\Reports"),
#"Combined Binaries" = Binary.Combine(Source[Content]),
#"Imported CSV" = Csv.Document(#"Combined Binaries",[Delimiter=";", Columns=21, Encoding=1252, QuoteStyle=QuoteStyle.None]),
#"Changed Type" = Table.TransformColumnTypes(#"Imported CSV",{{"Column1", type text}, {"Column2", type text}, {"Column3", type text}, {"Column4", type text}, {"Column5", type text}, {"Column6", type text}, {"Column7", type text}, {"Column8", type text}, {"Column9", type text}, {"Column10", type text}, {"Column11", type text}, {"Column12", type text}, {"Column13", type text}, {"Column14", type text}, {"Column15", type text}, {"Column16", type text}, {"Column17", type text}, {"Column18", type text}, {"Column19", type text}, {"Column20", type text}, {"Column21", type text}}),
#"Removed Top Rows" = Table.Skip(#"Changed Type",1),
#"Promoted Headers" = Table.PromoteHeaders(#"Removed Top Rows"),
#"Removed Blank Rows" = Table.SelectRows(#"Promoted Headers", each not List.IsEmpty(List.RemoveMatchingItems(Record.FieldValues(_), {"", null})))
in
#"Removed Blank Rows"
I tried incorporating your script but I couldn't seem to get it to work. I appreciate the help!!!
Your code should look like this:
let Source = Folder.Files("C:\Users\pbakaric\Google Drive\DFM Dashboard\Reports"), #"Added Custom" = Table.AddColumn(Source, "Custom", each Table.PromoteHeaders(Table.Skip(Csv.Document([Content], [Delimiter=";", Columns=4, Encoding=1252, QuoteStyle=QuoteStyle.None]),1))), #"Removed Other Columns" = Table.SelectColumns(#"Added Custom",{"Name", "Custom"}), #"Expanded Custom" = Table.ExpandTableColumn(#"Removed Other Columns", "Custom", {"Datum", "Menge", "Wert", "Kommentar"}, {"Datum", "Menge", "Wert", "Kommentar"}) in #"Expanded Custom"
Check out the video as well, as there you'll find another method, showing how to use an explicit function to do that. This might be more convenient if there are more steps to perform an the nesting into the #"Added Custom"-steps becomes too confusing.Hi ImkeF,
I'm following the steps outlined in the video to retain the file names and I'm receiving an error at the very last step, when I add a custom column:
= Table.AddColumn(Source, "Custom", each Folder([Content]))
The error I am receiving is as follows: "Expression error: The name 'Folder" wasn't recognized. Make sure it's spelled correctly."
Here's the function I created:
= (Content) =>
let
// Source = Folder.Files("C:XXXContentDrilldown"),
// #"C:XXXContentDrilldown csv" = Source{[#"Folder Path"="C:\XXXContentDrilldown\",Name="XXXContent Drilldown 20160501-20160531.csv"]}[Content],
#"Imported CSV" = Csv.Document(Content,[Delimiter=",", Columns=7, Encoding=1252, QuoteStyle=QuoteStyle.None]),
#"Changed Type" = Table.TransformColumnTypes(#"Imported CSV",{{"Column1", type text}, {"Column2", type text}, {"Column3", type text}, {"Column4", type text}, {"Column5", type text}, {"Column6", type text}, {"Column7", type text}}),
#"Removed Top Rows" = Table.Skip(#"Changed Type",6),
#"Promoted Headers" = Table.PromoteHeaders(#"Removed Top Rows")in #"Promoted Headers"
I would appreciate any insight.
Thanks!
Margaryta
Hi Margaryta,
The error not recognize the name "Folder" refers to the name of the function (the name of the query):
So you either rename the function/query or edit your code to the name you gave it already.