: Computed at data refresh and stored in the model; best for filtering or grouping.
: Occurs when a formula iterates row-by-row, such as in a calculated column. Measures vs. Columns : DAX Functions
Understanding DAX requires more than just memorizing functions; it requires grasping how data is filtered and evaluated: : Computed at data refresh and stored in
DAX functions are categorized based on the problems they solve: Learn DAX basics in Power BI Desktop DAX Functions
: The specific subset of data being calculated (e.g., a specific year or region selected in a report).