Is Power BI Scripting Language?


Heather Bennett

Is Power BI Scripting Language?

Power BI is a powerful business intelligence tool that allows users to analyze data and share insights. While it offers a wide range of features and functionalities, one question that often arises is whether Power BI has its own scripting language.

The Power Query Editor

To understand the scripting capabilities of Power BI, we need to look at the Power Query Editor. This editor is a data transformation and query language tool that allows users to shape and clean their data before loading it into Power BI.

In the Power Query Editor, you can perform various data transformation tasks such as filtering, sorting, merging, and grouping. These tasks are achieved through a scripting language known as M.

What is M?

M is the scripting language used in Power Query. It stands for “Mashup,” which reflects its ability to combine data from different sources and shape it into a unified format.

M is similar to other programming languages in terms of its syntax and structure. It allows you to write scripts that define how your data should be transformed and loaded into Power BI.

The Benefits of Using M

  • Flexibility: M provides a flexible environment for transforming data. You can write custom scripts to handle complex transformations that may not be possible with the built-in functionalities of Power Query.
  • Reusability: Once you have written a script in M, you can reuse it across multiple projects or datasets.

    This saves time and effort by eliminating the need to recreate transformations for each project.

  • Automation: By leveraging M scripts, you can automate your data transformation processes. This allows you to refresh your data with updated sources automatically and ensure that your reports are always up to date.

Writing M Scripts in Power Query Editor

When you open the Power Query Editor, you’ll find a dedicated script editor where you can write and edit M scripts. This editor provides features like syntax highlighting, auto-completion, and error checking to help you write efficient and error-free scripts.

Within the script editor, you can define various data transformation steps using M functions. These functions allow you to perform tasks such as filtering rows, merging tables, or creating calculated columns.


In this example, the M script loads an Excel file ("Sample.xlsx") from a specific location and transforms the data on "Sheet1" by changing the data types of two columns.


In summary, Power BI does not have its own scripting language. However, it utilizes the M scripting language within the Power Query Editor for data transformation tasks.

M provides flexibility, reusability, and automation capabilities to shape your data before loading it into Power BI. By leveraging M scripts in the Power Query Editor, users can create powerful data transformations that go beyond the built-in functionalities of Power BI.