Merging and formating Excel Worksheets with power query - excel

Question

I'm trying to format an excel file using Power Query in order to be able to pivot it, but I haven't been able to do it right.
I'm merging many worksheets from different workbooks into one. Every sheet has the data of the specific workbook in the first 3 rows (column 1= Title; and Column 2= Value), and then I have the table well formatted starting in row 5 (with headers and all, but different amount of rows each)
How can I transform the data in the first 3 rows of every sheet into columns, so I can get a Pivotable table?
Here an example of what I get when merging 2 files.

Answer 1

Based on the picture I assume you would like to transform such kind of file
to something like that
I used the following M-Code for that
let
Source = Table.FromColumns({Lines.FromBinary(File.Contents("D:\tmp\Files\file1.txt"), null, null, 1252)}),
#"Kept First Rows" = Table.FirstN(Source,3),
#"Split Column by Delimiter" = Table.SplitColumn(#"Kept First Rows", "Column1", Splitter.SplitTextByDelimiter("#(tab)", QuoteStyle.Csv), {"Col1", "Col2"}),
step = Table.TransformColumnTypes(#"Split Column by Delimiter",{{"Col1", type text}, {"Col2", type text}}),
#"Transposed Table" = Table.Transpose(step),
#"Promoted Headers" = Table.PromoteHeaders(#"Transposed Table", [PromoteAllScalars=true]),
Hdr = Table.TransformColumnTypes(#"Promoted Headers",{{"Nummer", type text}, {"Id", type text}}),
Custom1 = Source,
#"Removed Top Rows" = Table.Skip(Custom1,4),
#"Split Column by Delimiter1" = Table.SplitColumn(#"Removed Top Rows", "Column1", Splitter.SplitTextByDelimiter("#(tab)", QuoteStyle.Csv), {"Column1.1", "Column1.2", "Column1.3", "Column1.4"}),
#"Changed Type1" = Table.TransformColumnTypes(#"Split Column by Delimiter1",{{"Column1.1", type text}, {"Column1.2", type text}, {"Column1.3", type text}, {"Column1.4", type text}}),
#"Promoted Headers1" = Table.PromoteHeaders(#"Changed Type1", [PromoteAllScalars=true]),
#"Changed Type2" = Table.TransformColumnTypes(#"Promoted Headers1",{{"F1", Int64.Type}, {"F2", Int64.Type}, {"F3", Int64.Type}, {"F4", Int64.Type}}),
#"Added Custom" = Table.AddColumn(#"Changed Type2", "Nummer", each Hdr[Nummer]),
#"Added Custom1" = Table.AddColumn(#"Added Custom", "ID", each Hdr[Id]),
#"Added Custom2" = Table.AddColumn(#"Added Custom1", "Export", each Hdr[Export]),
#"Expanded Export" = Table.ExpandListColumn(#"Added Custom2", "Export"),
#"Expanded ID" = Table.ExpandListColumn(#"Expanded Export", "ID"),
#"Expanded Nummer" = Table.ExpandListColumn(#"Expanded ID", "Nummer"),
#"Changed Type" = Table.TransformColumnTypes(#"Expanded Nummer",{{"Export", type date}})
in
#"Changed Type"