testsAndMisc/python_pkg/sql_drills/fixtures/03_month_bucket/DOCS-task.md
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

448 B

Month buckets with DATE_FORMAT and conditional aggregation

orders has one row per order with a status of shipped, pending or cancelled. Summarise per calendar month.

Output columns (no header): month (as YYYY-MM), total orders, shipped orders, cancelled orders, revenue of shipped orders only.

  • Revenue is 0.00 for a month with no shipped orders.
  • Only months that have at least one order appear.
  • Order by month ascending.