CMU 15-445 Fall 2025 Homework #1: SQL (DuckDB, baseball dataset)

Single-statement analytical queries over a real dataset, from filters to multi-table aggregation and an upsert, in a full-featured DBMS.

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The exercise happens on CMU 15-445. Canonical link: https://15445.courses.cs.cmu.edu/fall2025/homework1/. Link check: link responded (5 Oct 2026). Opened from this app 0 times; opening is not counted as an attempt.

Supports: SQL semantics and fluency for backend, data and database research roles. The handout and data are public; autograder access for non-enrolled learners varies by semester, so check results against your own predictions.

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