results/before_after_eval.json

{
  "rows": [
    {
      "task_id": "task_1_basic_antipatterns",
      "task_name": "Basic SQL Anti-pattern Detection",
      "difficulty": "easy",
      "before_score": 0.45,
      "after_score": 0.83,
      "delta": 0.38
    },
    {
      "task_id": "task_2_correlated_subqueries",
      "task_name": "N+1 Correlated Subquery Elimination",
      "difficulty": "medium",
      "before_score": 0.45,
      "after_score": 0.69,
      "delta": 0.24
    },
    {
      "task_id": "task_3_wildcard_scan",
      "task_name": "Wildcard LIKE & Projection Optimization",
      "difficulty": "medium-hard",
      "before_score": 0.45,
      "after_score": 0.69,
      "delta": 0.24
    },
    {
      "task_id": "task_4_implicit_join",
      "task_name": "Implicit Cross Join & Scalar Subquery Elimination",
      "difficulty": "hard",
      "before_score": 0.45,
      "after_score": 0.69,
      "delta": 0.24
    },
    {
      "task_id": "task_5_window_functions",
      "task_name": "Window Function & Full-Scan Audit",
      "difficulty": "expert",
      "before_score": 0.45,
      "after_score": 0.75,
      "delta": 0.3
    }
  ]
}