Summary
In this chapter, we explored the process of creating custom functions in Power Query. Effective use of custom functions in Power Query begins with proper planning, forming the cornerstone for building efficient and adaptable functions. This involves defining the problem, identifying parameters, and setting clear objectives to align with your data preparation needs. Parameters, as you learned, play a crucial role in enhancing the flexibility of your functions for various scenarios. The process of creating custom functions encompasses defining the function’s structure, writing M code, thorough testing and debugging, and comprehensive documentation. Armed with these insights, you are well-prepared to leverage the full potential of custom functions in Power Query, with capabilities for seamless data transformation and preparation.
In the next chapter, you will learn more about the techniques and tips on how you can optimize your M code.