Dax Functions Direct

Understanding DAX requires more than just memorizing functions; it requires grasping how data is filtered and evaluated:

: This is the environment in which a formula is executed. DAX Functions

: The specific subset of data being calculated (e.g., a specific year or region selected in a report). DAX Functions

: Occurs when a formula iterates row-by-row, such as in a calculated column. Measures vs. Columns : DAX Functions

: Computed at data refresh and stored in the model; best for filtering or grouping.

: Calculated on the fly based on report filters; more CPU-efficient and generally recommended for most analytical needs. Key Function Categories