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cthardwik Frequent Visitor
Frequent Visitor

Automatic Data Transformation

I have lots of different spreadsheets that are all the same format, but with different data in them. At the moment I have to upload each speadsheet individualy, carry out the transformations of the data in query editor and then appended them all together. Is there a way this can be done automatically?


For example is there a way with using Get Data from Folders?  Can Power BI select all the specific tables in the spreadsheets and then carry out a pre deturmined set of transformations on the data? And then perhaps even append them all together?


(All the spreadsheets have a lot of tables in that I am not interested in, but I only upload the same 3 tables from each spreadsheet, which are all in the same format)


The transformations I carry out on each table are:


    Source = Excel.CurrentWorkbook(){[Name="Table9"]}[Content]
   #"Transposed Table" = Table.Transpose(Source),
    #"Promoted Headers" = Table.PromoteHeaders(#"Transposed Table"),
    #"Unpivoted Columns" = Table.UnpivotOtherColumns(#"Promoted Headers", {"Date", "Status"}, "Attribute", "Value"),
    #"Changed Type" = Table.TransformColumnTypes(#"Unpivoted Columns",{{"Date", type date}})
    #"Changed Type"


So basically, transposed table, promote first row as headers, unpivot a set amount of columns, change type of one of the rows to date.



Steve_Wheeler Established Member
Established Member

Re: Automatic Data Transformation

If you have, or can create, a table of the workbooks you want (with the same Table in each) then you can process them all with your transformations set up as a function - e.g. see

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