Window Functions for Ranking, Running Totals, and Cohorts

Help learners understand this topic clearly, practice it on a small example, and produce reviewable evidence before moving to the next module.

Units

1. Unit 07.00: Window Functions for Ranking, Running Totals, and Cohorts: Read the schema and identify the grain
2. Unit 07.01: Window Functions for Ranking, Running Totals, and Cohorts: Write the query in small testable steps
3. Unit 07.02: Window Functions for Ranking, Running Totals, and Cohorts: Check row counts, joins, filters, and nulls
4. Unit 07.03: Window Functions for Ranking, Running Totals, and Cohorts: Explain what the query proves and does not prove
5. Unit 07.04: Window Functions for Ranking, Running Totals, and Cohorts: Save the final SQL evidence note

Module work

• Activity
• Knowledge check
• Summary