| { |
| "pack": "edtech-practice-evalpack", |
| "misata_version": "0.8.7.1", |
| "seed": 42, |
| "spec_sha256": "442a7dd34251d5d05e7e8face9ae50add7034f11507daf5706a823fb0c6bb55f", |
| "generated_at": "2026-07-16T15:06:04.534636+00:00", |
| "verifier": { |
| "engine": "duckdb", |
| "version": "1.4.2" |
| }, |
| "sql_dialect": "duckdb", |
| "answer_comparison": "numeric at round_decimals (never string equality); strings compared exactly", |
| "fk_integrity": [ |
| { |
| "relationship": "practice_attempts.student_id -> students.student_id", |
| "orphans": 0, |
| "verified": true |
| } |
| ], |
| "conformance_warnings": [], |
| "questions": [ |
| { |
| "id": "q001", |
| "gold_sql": "SELECT ROUND(SUM(\"duration_seconds\"), 2) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-01-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-02-01 00:00:00'", |
| "expected": 500000.0, |
| "observed": 500000, |
| "match": true |
| }, |
| { |
| "id": "q002", |
| "gold_sql": "SELECT ROUND(SUM(\"duration_seconds\"), 2) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-02-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-03-01 00:00:00'", |
| "expected": 520000.0, |
| "observed": 520000, |
| "match": true |
| }, |
| { |
| "id": "q003", |
| "gold_sql": "SELECT ROUND(SUM(\"duration_seconds\"), 2) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-03-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-04-01 00:00:00'", |
| "expected": 540000.0, |
| "observed": 540000, |
| "match": true |
| }, |
| { |
| "id": "q004", |
| "gold_sql": "SELECT ROUND(SUM(\"duration_seconds\"), 2) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-04-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-05-01 00:00:00'", |
| "expected": 560000.0, |
| "observed": 560000, |
| "match": true |
| }, |
| { |
| "id": "q005", |
| "gold_sql": "SELECT ROUND(SUM(\"duration_seconds\"), 2) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-05-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-06-01 00:00:00'", |
| "expected": 580000.0, |
| "observed": 580000, |
| "match": true |
| }, |
| { |
| "id": "q006", |
| "gold_sql": "SELECT ROUND(SUM(\"duration_seconds\"), 2) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-06-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-07-01 00:00:00'", |
| "expected": 600000.0, |
| "observed": 600000, |
| "match": true |
| }, |
| { |
| "id": "q007", |
| "gold_sql": "SELECT ROUND(SUM(\"duration_seconds\"), 2) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-01-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-07-01 00:00:00'", |
| "expected": 3300000.0, |
| "observed": 3300000, |
| "match": true |
| }, |
| { |
| "id": "q008", |
| "gold_sql": "SELECT COUNT(*) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-01-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-02-01 00:00:00'", |
| "expected": 2273, |
| "observed": 2273, |
| "match": true |
| }, |
| { |
| "id": "q009", |
| "gold_sql": "SELECT COUNT(*) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-02-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-03-01 00:00:00'", |
| "expected": 2364, |
| "observed": 2364, |
| "match": true |
| }, |
| { |
| "id": "q010", |
| "gold_sql": "SELECT COUNT(*) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-03-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-04-01 00:00:00'", |
| "expected": 2455, |
| "observed": 2455, |
| "match": true |
| }, |
| { |
| "id": "q011", |
| "gold_sql": "SELECT COUNT(*) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-04-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-05-01 00:00:00'", |
| "expected": 2545, |
| "observed": 2545, |
| "match": true |
| }, |
| { |
| "id": "q012", |
| "gold_sql": "SELECT COUNT(*) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-05-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-06-01 00:00:00'", |
| "expected": 2636, |
| "observed": 2636, |
| "match": true |
| }, |
| { |
| "id": "q013", |
| "gold_sql": "SELECT COUNT(*) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-06-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-07-01 00:00:00'", |
| "expected": 2727, |
| "observed": 2727, |
| "match": true |
| }, |
| { |
| "id": "q014", |
| "gold_sql": "SELECT strftime(date_trunc('month', \"attempted_at\"), '%Y-%m') AS period FROM \"practice_attempts\" GROUP BY 1 ORDER BY SUM(\"duration_seconds\") DESC, 1 ASC LIMIT 1", |
| "expected": "2025-06", |
| "observed": "2025-06", |
| "match": true |
| }, |
| { |
| "id": "q017", |
| "gold_sql": "SELECT ROUND(AVG(CASE WHEN \"correct\" = TRUE THEN 1.0 ELSE 0.0 END), 4) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-03-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-04-01 00:00:00'", |
| "expected": 0.602, |
| "observed": 0.602, |
| "match": true |
| }, |
| { |
| "id": "q019", |
| "gold_sql": "SELECT ROUND(AVG(CASE WHEN \"correct\" = TRUE THEN 1.0 ELSE 0.0 END), 4) FROM \"practice_attempts\" WHERE \"attempted_at\" >= TIMESTAMP '2025-05-01 00:00:00' AND \"attempted_at\" < TIMESTAMP '2025-06-01 00:00:00'", |
| "expected": 0.654, |
| "observed": 0.654, |
| "match": true |
| }, |
| { |
| "id": "q021", |
| "gold_sql": "SELECT COUNT(*) FROM \"practice_attempts\" c LEFT JOIN \"students\" p ON c.\"student_id\" = p.\"student_id\" WHERE p.\"student_id\" IS NULL AND c.\"student_id\" IS NOT NULL", |
| "expected": 0, |
| "observed": 0, |
| "match": true |
| } |
| ], |
| "all_match": true |
| } |
