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master
examples/sql/sql-7-002/part-01.sql
20 строк
548 B
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Code migration pack
09 июн 2026, 01:41
09 июн 2026, 01:41
cebc284
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WITH monthly AS ( SELECT DATE_TRUNC('month', o.order_date) AS month, SUM(oi.quantity * oi.unit_price) AS revenue FROM shop_data.orders o JOIN shop_data.order_items oi ON oi.order_id = o.order_id WHERE o.status = 'delivered' GROUP BY 1 ) SELECT month, revenue, LAG(revenue) OVER (ORDER BY month) AS prev_month, ROUND( 100.0 * (revenue - LAG(revenue) OVER (ORDER BY month)) / NULLIF(LAG(revenue) OVER (ORDER BY month), 0), 1 ) AS growth_pct FROM monthly ORDER BY month;