Week 01

Problem set

This week has 6 topics, one per day, and a problem set on Day 7. They build in order: filtering, then aggregation, then joins, then subqueries. Do not skip Day 1 even if it looks easy. The judge's output rules bite everyone once.

Query Fundamentals & Joins6 topics
PreviousSubqueries, CTEs & Set OperationsUp next · Week 2, Day 8Window Functions I: ROW_NUMBER, RANK & Top-N per Group

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