Create 1251-average-selling-price.sql

Author: everthis

1251-average-selling-price.sql

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+# Write your MySQL query statement below
+SELECT a.product_id,ROUND(SUM(b.units*a.price)/SUM(b.units),2) as average_price
+FROM Prices as a
+JOIN UnitsSold as b
+ON a.product_id=b.product_id AND (b.purchase_date BETWEEN a.start_date AND a.end_date)
+GROUP BY product_id;