combine multiple excel files have different header into one

[musasi77]

Hi,

I have multiple excel files which is in SharePoint online folder which looks like below table.

	Excel File 1
	01/01/2018	02/01/2018	30/01/2018	31/01/2018
Asia
EU
US

	Excel File 2
	01/02/2018	02/02/2018	27/02/2018	28/02/2018
Asia
EU
US

Each of the file has a "date" as a table header, it is not fixed because of number of date in that month (28 to 31 days),

I'd like to combine all data by paste it next to each other (vertically) to be unpivot, is there any methods to combine it in Power Query?

I think creating 1 query per file, and unpivot, then append (or merge) query is mostly simple, but I'd like to automize the job for coming months because I have multiple partners and all of them has same structure of the tables, need to be refresh my dashboard daily basis so it is hard to make it one by one every day.

Current "combine files" feature only support adding data below down, it was very hard to rearrange the data for me.

Thanks and regards,

Hanwool

[ImkeF · Accepted solution]

Instead of creating multiple queries and append subsequently, it would be easiest to store all your files in one folder and then use the Import from folder method. But instead of using Binary combine, write your own custom function that unpivots first, before combining all results from the different sources.

Check these sources on how to write your own function:

https://blog.crossjoin.co.uk/2016/05/15/creating-m-functions-from-parameterised-queries-in-power-bi/

https://www.youtube.com/watch?v=Ar_fV_oXSNs&t=3s

[musasi77]

Thank you very much, actually my files are in the Sharepoint Online folders but I found a solution from the linked pages.

Cheers!