Combine all sheets with different names from multiple files

Hello Anonymous 

read from a folder, where you have all your files. On the folder data add this formula (hopefully you are reading from a sheet and not from a table, otherwise you would need to adapt the code a little bit

Table.Combine( List.Transform( Excel.Workbook([Content])[Data], each Table.PromoteHeaders(_)))

this formula gives you combines tables form every single file. Right click on your step on the right side and choose insert step after. User here now again a table.combine where you are reference your previous step and your newly created column

Table.Combine(#"Added Custom"[TablesFromFile])

here a complete example

let
    Source = Folder.Files("YourFolderWithFilesToMerge"),
    #"Added Custom" = Table.AddColumn(Source, "TablesFromFile", each Table.Combine( List.Transform( Excel.Workbook([Content])[Data], each Table.PromoteHeaders(_)))),
    CombineAllFiles = Table.Combine(#"Added Custom"[TablesFromFile])
in
    CombineAllFiles

Copy paste this code to the advanced editor in a new blank query to see how the solution works. 

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

Hello Anonymous 

this code now adds the sheet name before combining

let
    Source = Folder.Files("YourFolderWithFilesToMerge"),
    #"Added Custom" = Table.AddColumn(Source, "TablesFromFile", each Table.Combine(Table.AddColumn(Excel.Workbook([Content]), "WithSheetName", (add)=> Table.AddColumn(Table.PromoteHeaders(add[Data]),"Sheet name", each add[Name] ))[WithSheetName])),
    CombineAllFiles = Table.Combine(#"Added Custom"[TablesFromFile])
in
    CombineAllFiles

Copy paste this code to the advanced editor in a new blank query to see how the solution works.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy