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CODE WORKSPACE
Build a CTE for paid/shipped orders, then aggregate revenue by buyer.
Result columns · in this order
buyer_idrevenueHow to approach it
Start with paid_orders, then aggregate buyer_revenue.
Sample input
| order_id | buyer_id | status | total_amount |
|---|---|---|---|
| 1001 | 1 | paid | 80 |
| 1004 | 1 | shipped | 220 |
| 1009 | 1 | pending | 30 |
| 1005 | 2 | paid | 540 |
| 1010 | 6 | paid | 640 |
5 rows — all rows shown.
Expected output
| buyer_id | revenue |
|---|---|
| 2 | 650 |
| 6 | 640 |
| 1 | 300 |
| 3 | 290 |
| 4 | 150 |
5 rows — all rows shown.
Constraints
Use at least one CTE. Return buyer_id and revenue ordered by revenue descending, then buyer_id.
Expected skills
CTE decomposition, grouped aggregation, and readable intermediate naming.
Submit for review to find out what your query gets right, what it gets wrong, and how it compares with the best working query for this exercise.
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