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M language in power BI

Kiran Kumar

Kiran Kumar
1w
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What is "M language"

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Eliana Blake

Eliana Blake

842 911 153 1w

Certainly! The "M language" in Power BI, also known as the "Power Query Formula Language," is a powerful and versatile scripting language used for data transformation and manipulation within Power BI and Excel. M allows users to perform a wide range of data preparation tasks, such as connecting to various data sources, cleaning and transforming data, and shaping data models for analysis and reporting.

Here are some key points about the M language:

1. Data Transformation: M language is primarily used in Power Query, an ETL (Extract, Transform, Load) tool in Power BI. It enables users to transform and clean data from different sources before loading it into the data model.

2. Formula-Based Language: M language is a functional language that uses formulas to specify data transformation steps. These formulas are written in the advanced editor within Power Query.

3. Step-by-Step Processing: M scripts in Power Query consist of a series of steps that guide the data transformation process. Each step modifies the dataset sequentially.

4. Flexibility and Extensibility: M language offers a wide range of functions, operators, and expressions that allow users to handle complex data transformation tasks. It also supports custom functions for more advanced scenarios.

5. Integration with Power BI: M language seamlessly integrates with Power BI, enabling users to create dynamic and efficient data transformation processes for their reports and dashboards.

Here is a simple example of M language code that combines two columns in a table:


let
    Source = YourDataSource,
    CombinedColumn = Table.AddColumn(Source, "Combined", each [Column1] & [Column2])
in
    CombinedColumn

This code snippet demonstrates how to create a new column in a table by concatenating two existing columns.

Overall, mastering the M language in Power BI empowers users to efficiently handle data preparation tasks, ensuring that the data is structured and optimized for analysis and visualization. Let me know if you have any specific questions or need further clarification on any aspect of the M language in Power BI!

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