/*
{
  "qid": "009",
  "task_type": "ambig",
  "has_intended_resolution": true,
  "language": "SQLite",
  "db": "retails",
  "question": "List the customer who made the highest number of purchases using rail shipping.",
  "gold_ambiguity_points": [
    {
      "id": "A",
      "phrase": "number of purchases using rail shipping",
      "type": "finite",
      "ambiguity_type": "semantic_computation",
      "interpretations": [
        "number of orders containing at least one line item shipped by rail",
        "number of line items shipped by rail",
        "total quantity shipped by rail"
      ],
      "intended_interpretation_idx": 1
    }
  ],
  "gold_intended_query_id": "GQRY-A.1",
  "extra_info": {}
}
*/


----- START OF GOLD QUERY `GQRY-A.0` -----
/*
{
  "id": "GQRY-A.0",
  "parameter_names": [],
  "parameter_values": {},
  "other_exec_results": [],
  "required_columns": [
    1
  ],
  "required_sorted": false,
  "extra_info": {
    "ambiguity_resolution": {
      "[A] number of purchases using rail shipping": "number of orders containing at least one line item shipped by rail"
    }
  }
}
*/
WITH customer_rail_orders AS (
SELECT c.c_custkey,
c.c_name,
COUNT(DISTINCT o.o_orderkey) AS rail_orders
FROM customer c
JOIN orders o ON c.c_custkey = o.o_custkey
JOIN lineitem l ON o.o_orderkey = l.l_orderkey
WHERE l.l_shipmode = 'RAIL'
GROUP BY c.c_custkey, c.c_name
)
SELECT c.c_custkey, c.c_name, c.rail_orders
FROM customer_rail_orders c
WHERE c.rail_orders = (
SELECT MAX(rail_orders) FROM customer_rail_orders
);
/* EXEC RESULT
 c_custkey             c_name  rail_orders
     63035 Customer#000063035           20
     68513 Customer#000068513           20
*/
----- END OF GOLD QUERY -----


----- START OF GOLD QUERY `GQRY-A.1` -----
/*
{
  "id": "GQRY-A.1",
  "parameter_names": [],
  "parameter_values": {},
  "other_exec_results": [],
  "required_columns": [
    1
  ],
  "required_sorted": false,
  "extra_info": {
    "ambiguity_resolution": {
      "[A] number of purchases using rail shipping": "number of line items shipped by rail"
    }
  }
}
*/
WITH customer_rail_lineitems AS (
SELECT c.c_custkey,
c.c_name,
COUNT(*) AS rail_ship_count
FROM customer c
JOIN orders o ON c.c_custkey = o.o_custkey
JOIN lineitem l ON o.o_orderkey = l.l_orderkey
WHERE l.l_shipmode = 'RAIL'
GROUP BY c.c_custkey, c.c_name
)
SELECT c.c_custkey, c.c_name, c.rail_ship_count
FROM customer_rail_lineitems c
WHERE c.rail_ship_count = (
SELECT MAX(rail_ship_count) FROM customer_rail_lineitems
);
/* EXEC RESULT
 c_custkey             c_name  rail_ship_count
     63035 Customer#000063035               28
*/
----- END OF GOLD QUERY -----


----- START OF GOLD QUERY `GQRY-A.2` -----
/*
{
  "id": "GQRY-A.2",
  "parameter_names": [],
  "parameter_values": {},
  "other_exec_results": [],
  "required_columns": [
    1
  ],
  "required_sorted": false,
  "extra_info": {
    "ambiguity_resolution": {
      "[A] number of purchases using rail shipping": "total quantity shipped by rail"
    }
  }
}
*/
WITH customer_rail_quantity AS (
SELECT c.c_custkey,
c.c_name,
SUM(l.l_quantity) AS total_rail_quantity
FROM customer c
JOIN orders o ON c.c_custkey = o.o_custkey
JOIN lineitem l ON o.o_orderkey = l.l_orderkey
WHERE l.l_shipmode = 'RAIL'
GROUP BY c.c_custkey, c.c_name
)
SELECT c.c_custkey, c.c_name, c.total_rail_quantity
FROM customer_rail_quantity c
WHERE c.total_rail_quantity = (
SELECT MAX(total_rail_quantity) FROM customer_rail_quantity
);
/* EXEC RESULT
 c_custkey             c_name  total_rail_quantity
    119483 Customer#000119483                  798
*/
----- END OF GOLD QUERY -----