kuhyx/testsAndMisc
1
0
Fork 0
mirror of https://github.com/kuhyx/testsAndMisc.git synced 2026-11-10 20:47:03 +01:00
Code Issues Actions 6 Packages Projects Releases Wiki Activity
ee78ae44cc
testsAndMisc/python_pkg/sql_drills/fixtures/08_anti_join/DOCS-task.md
Krzysztof kuhy Rudnicki ee78ae44cc
Some checks are pending
dependency freshness / dependencies on newest stable (push) Waiting to run
Details
md-naming / markdown naming convention (push) Waiting to run
Details
Pre-commit checks / pre-commit (${{ matrix.group }}) (mypy, mypy) (push) Waiting to run
Details
Pre-commit checks / pre-commit (${{ matrix.group }}) (pylint, pylint) (push) Waiting to run
Details
Pre-commit checks / pre-commit (${{ matrix.group }}) (rest, ) (push) Waiting to run
Details
Pre-commit checks / pre-commit (${{ matrix.group }}) (shellcheck, shellcheck) (push) Waiting to run
Details
Python tests / test (push) Waiting to run
Details
repo-contract / repo contract (push) Waiting to run
Details
Shell tests / shell-tests (push) Waiting to run
Details
Shell tests / lib-tests (push) Waiting to run
Details
Shell tests / arch-tests (push) Waiting to run
Details
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

437 B
Raw Blame History

LEFT JOIN anti-join and NULL handling

List customers who have never placed a valid order. An order is valid when its status is not cancelled; a customer with only cancelled orders (or no orders) qualifies.

Output columns (no header): name, phone, where a missing phone prints as n/a.

  • Order by name ascending.
  • Trap: put the status condition in the ON clause, not in WHERE, or the cancelled-only customers vanish.