📄Power Query / M Language

Power Query and M language are a powerful duo for data manipulation and transformation within the Microsoft ecosystem.



Here`s a breakdown:

Power Query:

What it is: A visual tool for data extraction, transformation, and loading (ETL) processes.
Where you find it: Integrated into Excel, Power BI, Analysis Services, and Dataverse.
What it does:
- Connects to various data sources (databases, files, web services).
- Cleans and shapes data through a user-friendly interface.
- Prepares data for further analysis in tools like Power BI and Excel.

M Language (M):

What it is: The functional programming language powering Power Query.
What it`s for: Writing custom formulas and scripts for complex data transformations beyond the visual interface`s capabilities.
Key features:
- Functional: Focuses on expressions that return values.
- Case-sensitive: Syntax matters (uppercase vs lowercase).
- Similar to F#: Borrows concepts from the F# programming language.

Relationship between Power Query and M:

Power Query Editor provides a graphical interface for building data transformations. Underlying these transformations are M formulas. You can access the M code behind your transformations in the Formula Bar or Advanced Editor.

Benefits of using M:

Automation: Automate repetitive tasks for increased efficiency.
Complex Transformations: Handle intricate data manipulations not possible through the visual interface.
Customization: Tailor data transformations to specific needs.