DAX is intimidating at first, but a small set of patterns solves most reports. The key is understanding filter context and row context.
The patterns that pay off
- Period-over-period comparisons with time intelligence.
- Running totals and moving averages.
- Safe ratios that handle division by zero.
- Dynamic rankings with RANKX.
Mastering CALCULATE is the turning point: it is the function that lets you manipulate context and build everything else.
