testsAndMisc/python_pkg/sql_drills/tests/solutions/03_month_bucket.sql
Krzysztof kuhy Rudnicki ee78ae44cc
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Add sql_drills MySQL exact-match harness
Docker mysql:8.0.33 container, judge-style output grading, 12 original drills with live-verified references kept in tests only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WzxdWZewj4WS5X6AZyjWDp
2026-11-01 21:13:18 +01:00

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SQL

SELECT DATE_FORMAT(order_date, '%Y-%m') AS month,
COUNT(*),
SUM(CASE WHEN status = 'shipped' THEN 1 ELSE 0 END),
SUM(CASE WHEN status = 'cancelled' THEN 1 ELSE 0 END),
SUM(CASE WHEN status = 'shipped' THEN total ELSE 0 END)
FROM orders
GROUP BY month
ORDER BY month;