results.json

{
  "results": [
    {
      "task_id": 1,
      "task_name": "sql-task-1",
      "difficulty": "easy",
      "best_reward": 1.0,
      "attempts": 1,
      "final_sql": "SELECT COUNT(*) AS total_orders\nFROM orders\nWHERE STRFTIME('%Y', order_date) = '2024' AND status = 'completed'",
      "solved": true
    },
    {
      "task_id": 2,
      "task_name": "sql-task-2",
      "difficulty": "medium",
      "best_reward": 1.0,
      "attempts": 1,
      "final_sql": "SELECT c.first_name, c.last_name, SUM(o.total_amount) AS total_revenue\nFROM customers c\nJOIN orders o ON c.customer_id = o.customer_id\nWHERE o.status = 'completed'\nGROUP BY c.customer_id, c.first_name, c.last_name\nORDER BY total_revenue DESC\nLIMIT 5;",
      "solved": true
    },
    {
      "task_id": 3,
      "task_name": "sql-task-3",
      "difficulty": "hard",
      "best_reward": 1.0,
      "attempts": 1,
      "final_sql": "WITH category_revenue AS (\n  SELECT p.category, SUM(o.total_amount) AS total_revenue\n  FROM orders o\n  JOIN products p ON o.product_id = p.product_id\n  WHERE o.status = 'completed'\n  GROUP BY p.category\n)\nSELECT category, total_revenue, RANK() OVER (ORDER BY total_revenue DESC) AS revenue_rank\nFROM category_revenue\nORDER BY revenue_rank ASC;",
      "solved": true
    },
    {
      "task_id": 4,
      "task_name": "sql-task-4",
      "difficulty": "medium",
      "best_reward": 1.0,
      "attempts": 1,
      "final_sql": "SELECT \n  p.category, \n  AVG(p.price) AS avg_price\nFROM \n  products p\nGROUP BY \n  p.category\nHAVING \n  COUNT(p.product_id) > 2",
      "solved": true
    },
    {
      "task_id": 5,
      "task_name": "sql-task-5",
      "difficulty": "hard",
      "best_reward": 1.0,
      "attempts": 1,
      "final_sql": "SELECT customer_id, first_name \nFROM customers \nWHERE customer_id IN (\n  SELECT customer_id \n  FROM orders \n  WHERE product_id IN (\n    SELECT product_id \n    FROM products \n    WHERE category = 'Electronics'\n  )\n  INTERSECT\n  SELECT customer_id \n  FROM orders \n  WHERE product_id IN (\n    SELECT product_id \n    FROM products \n    WHERE category = 'Clothing'\n  )\n);",
      "solved": true
    },
    {
      "task_id": 6,
      "task_name": "sql-task-6",
      "difficulty": "expert",
      "best_reward": 0.9,
      "attempts": 5,
      "final_sql": "SELECT \n  STRFTIME('%Y-%m', order_date) AS month,\n  SUM(total_amount) AS total_revenue,\n  LAG(SUM(total_amount)) OVER (ORDER BY STRFTIME('%Y-%m', order_date)) AS prev_revenue,\n  ROUND(COALESCE((SUM(total_amount) - LAG(SUM(total_amount)) OVER (ORDER BY STRFTIME('%Y-%m', order_date))) / \n                  LAG(SUM(total_amount)) OVER (ORDER BY STRFTIME('%Y-%m', order_date)), 0) * 100, 2) AS growth_pct\nFROM orders\nWHERE STRFTIME('%Y', order_date) = '2024' AND status = 'completed'\nGROUP BY STRFTIME('%Y-%m', order_date)\nORDER BY STRFTIME('%Y-%m', order_date)",
      "solved": false
    },
    {
      "task_id": 7,
      "task_name": "sql-task-7",
      "difficulty": "expert",
      "best_reward": 1.0,
      "attempts": 1,
      "final_sql": "WITH ranked_orders AS (\n  SELECT \n    c.city,\n    p.product_name,\n    SUM(o.quantity) AS total_quantity,\n    RANK() OVER (PARTITION BY c.city ORDER BY SUM(o.quantity) DESC, p.product_id ASC) AS rank\n  FROM \n    customers c\n  JOIN \n    orders o ON c.customer_id = o.customer_id\n  JOIN \n    products p ON o.product_id = p.product_id\n  WHERE \n    o.status = 'completed'\n  GROUP BY \n    c.city, p.product_name, p.product_id\n)\nSELECT \n  city,\n  product_name,\n  total_quantity\nFROM \n  ranked_orders\nWHERE \n  rank = 1\nORDER BY \n  city ASC;",
      "solved": true
    },
    {
      "task_id": 8,
      "task_name": "sql-task-8",
      "difficulty": "expert",
      "best_reward": 0.949,
      "attempts": 5,
      "final_sql": "SELECT \n  c.customer_id, \n  c.first_name, \n  c.last_name, \n  SUM(CASE WHEN STRFTIME('%Y', o.order_date) = '2024' AND STRFTIME('%m', o.order_date) BETWEEN '01' AND '06' THEN o.total_amount ELSE 0 END) AS h1_revenue,\n  SUM(CASE WHEN STRFTIME('%Y', o.order_date) = '2024' AND STRFTIME('%m', o.order_date) BETWEEN '07' AND '12' THEN o.total_amount ELSE 0 END) AS h2_revenue\nFROM \n  customers c\n  JOIN orders o ON c.customer_id = o.customer_id\nWHERE \n  o.status = 'completed'\nGROUP BY \n  c.customer_id, c.first_name, c.last_name\nHAVING \n  h2_revenue > h1_revenue\nORDER BY \n  h2_revenue DESC",
      "solved": false
    }
  ],
  "avg_score": 0.981,
  "tasks_solved": 6
}