| # Task: 010 |
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| **Database:** retails |
|
|
| ## Question |
| Find the regions associated with the highest-value order in the car industry. |
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|
| ## Gold Query |
|
|
| ```sql |
| WITH automobile_orders AS ( |
| SELECT o.o_orderkey, o.o_totalprice, c.c_nationkey |
| FROM orders o |
| JOIN customer c ON o.o_custkey = c.c_custkey |
| WHERE c.c_mktsegment = 'AUTOMOBILE' |
| ), |
| max_order AS ( |
| SELECT MAX(o_totalprice) as max_price |
| FROM automobile_orders |
| ) |
| SELECT DISTINCT r.r_regionkey, r.r_name |
| FROM automobile_orders ao |
| JOIN max_order mo ON ao.o_totalprice = mo.max_price |
| JOIN nation n ON ao.c_nationkey = n.n_nationkey |
| JOIN region r ON n.n_regionkey = r.r_regionkey; |
| ``` |
|
|
| **Execution Result:** |
|
|
| | r_regionkey | r_name | |
| |---------------|----------| |
| | 3 | EUROPE | |
|
|
| *1 rows* |
