Any such data mashup is expressed using the Power Query M formula language. The M language is a functional, case sensitive language similar to F#. Power Query M is used to filter, combine, and mash-up data from one or more supported data sources.

Feb 13, 2025 · A function is a value that represents a mapping from a set of argument values to a single value. A function is invoked by provided a set of input values (the argument values), and produces a single output value (the return value). Writing functions. Functions are written using a function-expression: function-expression:

Mar 29, 2024 · The Power Query M function reference includes articles for each of the over 700 functions. These reference articles are auto-generated from in-product help. To learn more about functions and how they work in an expression, go to Understanding Power Query M functions. Functions by category. Accessing data functions; Binary functions; Combiner ...

In the Power Query M formula language, a function is a mapping from a set of input values to a single output value. A function is written by first naming the function parameters, and then providing an expression to compute the result of the function.

Unlock the Power Query M Language: Explore syntax, data types and language specifics, to help you master data transformation.

Power Query M lets you define custom functions to bundle and reuse specific data transformation steps. These functions can be written within a query or in separate modules. The function's body comes after the => symbol, and you can optionally specify type information for parameters and the return value.

Feb 7, 2014 · You’ve how to work with Power Query menus and connect to different data sources, and apply multiple transformations on the data. In this post I’ll go one step closer to the core of Power Query Formula Language known as M. In this post you will learn about structure of M language with demo samples.

Apr 17, 2023 · Power BI supports M Language and DAX to manage, manipulate, filter, and analyze the data. However, they are distinct from one another, are not interdependent, and each has a unique syntax, structure, and logic.

Simple Power Query M formula steps. Let's assume you created the following transform in the Power Query editor. This query converts product names to the appropriate case, in this instance, to all initial capitalization. To begin with, you have a table that looks like this:

LOOPING SUBROUTINES REFERENCE. Subroutines can be looped using the do/while or while/endwhile keyword constructs. DO/WHILE. The do/while loop executes a block of code once and continues to execute the code block until the while argument evaluates to true.