Create 1511-customer-order-frequency.sql

Author: everthis

1511-customer-order-frequency.sql

@@ -0,0 +1,7 @@
+# Write your MySQL query statement below
+SELECT customer_id, name
+FROM Customers JOIN Orders USING(customer_id) 
+    JOIN Product USING(product_id)
+GROUP BY customer_id
+HAVING SUM(IF(LEFT(order_date, 7) = '2020-06', quantity, 0) * price) >= 100
+    AND SUM(IF(LEFT(order_date, 7) = '2020-07', quantity, 0) * price) >= 100;