You can now design sophisticated multi-metric, multi-group queries that power real business intelligence reports and executive dashboards.

Build department + job_title compensation report with 5+ metrics

Create customer + month revenue analysis with filtering

Design product category + region sales report

Experiment with adding/removing grouping columns

Combine WHERE + complex GROUP BY + HAVING

Conditional Aggregation with CASE & FILTER will teach you to create pivot-style reports and calculate metrics with conditions in the same query.