The core principle involves `SUMMARIZE`, a DAX function within Power BI that acts as an internal table generator returning virtual results grouped by specified columns rather than modifying the physical dataset. This mechanism operates under domain constraints where generated tables are inherently disconnected from external visual filters applied to other dimensions (such as Year or Location), necessitating the encapsulation of `SUMMARIZE` logic inside iterative measures like `SUMX`. Theoretically, this concept belongs to Data Modeling and Measure Calculations within Power BI; it addresses the boundary condition between static calculated tables that lose context versus dynamic virtual tables that maintain filter propagation through measure evaluation contexts.
The core principle involves `SUMMARIZE`, a DAX function within Power BI that acts as an internal table generator returning virtual results grouped by specified columns rather than modifying the physi…