Just taking first row

[harry1605]

Hello

I have a number of files in a folder and wanted to know how I could in power query

- only take the first (header row) from each file into a single file.  I want to do this so that I can compare the headers in each file

- automate the process

Thanks

[dufoq3]

Hi @harry1605, if you upload 2 or 3 files (you can delete all the data just keep header rows and at least one data row) i.e. to google drive and provide here a link with public permissions, we can create a query for you.

[slorin]

Hi,

with csv files 

let
Source = Folder.Files("C:\Temp"),
csv_files = Table.SelectRows(Source, each [Extension] = ".csv"),
Headers = Table.Combine(
    Table.AddColumn(
      csv_files,
      "Header",
      each Table.FromRecords({[Name = [Name]] & Csv.Document([Content],null,";"){0}})
    )[Header])
in
Headers

Stéphane 

[harry1605]

Hi Stephane,

Thank you for your response.  I am new to power query so can I confirm the following is correct or if you can correct for me:

1. I have opened a new excel workbook and selected get data from folder and have chosen the combine and transform option

2. When in the power query editor I go to the transform file step (or is it another step or way) I replace from the let statement with your code - my files are xlsx so replace csv

Thanks

[v-jingzhan-msft · Accepted solution]

Hi @harry1605 

As you are using Folder connector, it would be simple. In "Transform Sample File" query, Use Headers as First Row. 

Then Keep Top 1 Row. 

Then go to the combined query, if there is a step called "Changed Type", remove this step. You will have all column headers in the combined query. 

Best Regards,
Jing
If this post helps, please Accept it as Solution to help other members find it. Appreciate your Kudos!

[harry1605]

Hi Jing,

so sleek and so cool thank you.

Followed your instructions I had to de promote the header and take the top row and bingo got what I wanted!

Stephane thanks also for taking the time to support.