aggregation fnuction

Author: letsdeepchat

BASIC AGGREGATION FUNCTION/1251. Average Selling Price.sql

@@ -0,0 +1,6 @@
+# Write your MySQL query statement below
+SELECT p.product_id, IFNULL(ROUND(SUM(units*price)/SUM(units),2),0) AS average_price
+FROM Prices p LEFT JOIN UnitsSold u
+ON p.product_id = u.product_id AND
+u.purchase_date BETWEEN start_date AND end_date
+group by product_id