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SELECT
o.order_id,
c.customer_name,
SUM(oi.quantity * oi.unit_price)
AS revenue
FROM orders o
JOIN customers c
ON o.customer_id = c.customer_id
JOIN order_items oi
ON o.order_id = oi.order_id
GROUP BY
o.order_id, c.customer_name
ORDER BY revenue DESC;Monthly revenue · sample
| Order ID | Customer | Revenue |
|---|---|---|
| 1001 | Acme Co. | 1,240 |
| 1002 | GlobalMart | 892 |
| 1003 | Summit Ltd. | 1,540 |
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{
"order_id": "1001",
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