Aug 29, 2025 · An article that demonstrates how to create a custom column in Power Query using the Power Query M formula language.

In this case we created a simple average column but it can be anything in much the same way you would add columns into Excel. Show less

Nov 28, 2025 · The Table.AddColumn function in Power Query M adds a new column to an existing table. This function requires you to choose the table to be modified (table), name the new column …

Aug 13, 2024 · In this post, I’m going to show you how you can compare your values against an average to show a percent change in a new calculated column within Power Query.

Apr 8, 2024 · You can't do that - it's not possible to add a formula to an empty column in a PQ-generated table as it will be removed each time you refresh. You'd have to add the formula back again manually …

Oct 2, 2022 · This Power BI tutorial explains the syntax to add custom columns using the Power Query in Power BI, and how to create a custom column in the table using the Power Query editor in Power BI.

With Power Query, you can add an Index or Custom (you define the formula) column to your current query.

Oct 1, 2024 · In this video, you will learn how to use Power Query to add new columns based upon formula, and condition and by giving a pattern. Download the example files from the link below:...more

Mar 2, 2023 · Adding a calculated column is one of the most typical tasks in data cleaning — profit ratios, date durations, you name it. Power Query makes this a simple part of the data cleaning …

You can add a custom column to your current query by creating a formula. Power Query validates the formula syntax in the same way as the Query Editing dialog box.