How to display rows from datasets with variable schema in a single table visual?

Hi Divyanshu1504 ,

Thank you for reaching out to the Microsoft Fabric Community Forum. Thank you danextian and HarishKM  for your helpful response.

Power BI table visuals require a fixed schema, so columns cannot be created dynamically at runtime. The supported way to meet your requirement is to use Field Parameters. Define all possible columns once in a field parameter, then use a Dataset–Column mapping table to control which columns are visible based on the selected dataset. When a user selects Dataset A or B, only the mapped columns appear in the table. This approach simulates dynamic columns and is the simplest and recommended workaround in Power BI currently.

Thank you.