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CODE WORKSPACE
Return buyer_id and revenue for buyers with revenue at least 200.
Result columns · in this order
buyer_idrevenueHow to approach it
Aggregate in a FROM subquery, then filter revenue in the outer SELECT.
Sample input
| order_id | buyer_id | total_amount |
|---|---|---|
| 1001 | 1 | 80 |
| 1004 | 1 | 220 |
| 1009 | 1 | 30 |
| 1003 | 4 | 40 |
| 1008 | 4 | 150 |
5 rows — all rows shown.
Expected output
| buyer_id | revenue |
|---|---|
| 6 | 700 |
| 2 | 650 |
| 1 | 330 |
| 3 | 290 |
4 rows — all rows shown.
Constraints
Use a derived table in FROM. Order by revenue DESC, buyer_id ASC.
Expected skills
Derived tables, aggregation, and outer-query filtering.
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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