Power BI Tips and Tricks (Includes Time-Saving ChatGPT Prompts) - Circular Dependency Errors, Another Way to Fix It

The video addresses the circular dependency error in data calculations, demonstrating how using non-unique identifiers like order IDs can lead to incorrect results. It explores two solutions: using the 'remove filters' function and the 'all except' function. The latter requires a unique identifier, such as an index column, to work correctly. The video provides a step-by-step guide on adding an index column and applying these solutions, emphasizing the importance of unique identifiers in data calculations.

Describe the steps to add an index column in Power Query.

What are the potential errors that can occur if a unique identifier is not used?