Header Mapping Technique I Wish I Knew Sooner: Power Query Guide

Header Mapping Technique I Wish I Knew Sooner: Power Query Guide

In this tutorial, we'll walk through an essential Power Query technique to help you combine files with different headers or headers in different languages. If you've ever had to merge data from multiple sources, but the headers were all over the place, this method is for you. We’ll show you how to use a header mapping table to quickly standardize column names and make sure everything aligns perfectly. With just a few steps, we’ll set up a transformation that not only handles files with mismatched headers but also allows you to control the renaming process smoothly. Whether you’re combining datasets from different sources or dealing with language barriers in headers, this solution will save you a lot of time and frustration.

In this tutorial:
Learn how to set up a header mapping table to match column names.
Import files from a folder and combine them into a single table.
Promote headers and apply the header mapping to rename columns automatically.
Handle missing columns and errors with simple adjustments.
See how to apply this technique to files with different column counts for even more control.

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Timestamps:
00:00 - Problem
00:23 - 1: Importing the Mapping Table
00:37 - 2: Filtering Out Unnecessary Rows
01:04 - 3: Converting the Mapping Table into List Format
01:34 - 4: Importing the Files from a Folder
02:08 - 5: Promoting Headers and Renaming Columns
02:33 - 6: Handling Missing Headers with Error Fixes
02:51 - 7: Checking the Combined Data
03:05 - Final Tip

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[ahmedshalaby]

it would be best if you had a playlist of M language to understand what are you doing sometimes
just a suggestion
and thanks for the video

[whatsupwithdjpodcast]

Good information, but the music makes it difficult to hear your instructions. You don't need music; your voice is music enough!