08B
Compare these references after your own attempt. You can read them at any time; they do not record a live model or vendor run.
Compare these references after your own attempt. You can read them at any time; they do not record a live model or vendor run.
-- 08b: Sum net sales by channel
WITH line_totals AS (
SELECT order_id,SUM(quantity*unit_price-line_discount) AS line_sales
FROM aabha_sql.order_items GROUP BY order_id
), refund_totals AS (
SELECT order_id,SUM(amount) AS refunded
FROM aabha_sql.refunds WHERE refund_date < DATE '2025-04-01' GROUP BY order_id
), order_net AS (
SELECT o.order_id,o.customer_id,o.order_date,o.channel,
l.line_sales,COALESCE(r.refunded,0) AS refunded,
l.line_sales-COALESCE(r.refunded,0) AS net_sales
FROM aabha_sql.orders AS o
JOIN line_totals AS l ON l.order_id=o.order_id
LEFT JOIN refund_totals AS r ON r.order_id=o.order_id
WHERE o.status='completed' AND o.order_date >= DATE '2025-01-01'
AND o.order_date < DATE '2025-04-01'
)
SELECT channel,SUM(net_sales) AS net_sales FROM order_net GROUP BY channel ORDER BY channel;