M-Query is a formula language used by Microsoft Power Query to connect, filter, combine, and transform data from one or more supported data sources. It provides the logic behind repeatable data preparation processes and is used across Microsoft products including Power BI, Excel, Analysis Services, Dataverse, and Fabric.

As a functional and case-sensitive language, M enables users to build data transformations using expressions, functions, operators, variables, and conditional logic. It is especially valuable for shaping and preparing data before analysis, helping organizations turn information from different sources into consistent, structured datasets that can support analytics and reporting.

M-Query

KEY FEATURES
  • Data Transformation
    M provides powerful capabilities for filtering, shaping, and combining data from sources within Power Query.

    • Data filtering
    • Data shaping
    • Data combination
  • Functional Language
    M is a functional, case-sensitive language that uses expressions, values, functions, and operators to define data transformations.

    • Functional expressions
    • Built-in functions
    • Flexible operators
  • Multi-Source Data Integration
    Users are enabled to create repeatable data mashups using information from supported data sources.

    • Multiple data sources
    • Data mashups
    • Repeatable processes
  • Microsoft Ecosystem Integration
    M is embedded across Microsoft products including Power BI, Excel, Dataverse, Analysis Services, and Microsoft Fabric.

    • Power BI support
    • Excel integration
    • Fabric compatibility
COMMON USE CASES
  • Data Cleaning & Preparation
    Use M to filter, transform, and prepare
    data before it is loaded for analysis and reporting.
  • Combining Multiple Data Sources
    Combine data from multiple supported sources to create unified datasets for further analysis.
  • Repeatable Data Transformations
    Create reusable transformation logic in Power Query to support repeatable data preparation processes.
  • Custom Transformation Logic
    Use M functions, operators, variables, and conditional expressions to build more complex data transformations.
  • Data Type
    Conversion
    Use M's type system and conversion capabilities to work with different types of values during data preparation.
  • Cross-Platform Data Preparation
    Apply M-based transformations across Microsoft products including Power BI, Excel, Dataverse, and Microsoft Fabric.
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