diff --git a/1164-product-price-at-a-given-date/1164-product-price-at-a-given-date.sql b/1164-product-price-at-a-given-date/1164-product-price-at-a-given-date.sql
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+++ b/1164-product-price-at-a-given-date/1164-product-price-at-a-given-date.sql
@@ -0,0 +1,7 @@
+# Write your MySQL query statement below
+
+SELECT DISTINCT P4.product_id, IFNULL(P3.new_price, 10) AS price FROM Products P4
+LEFT JOIN 
+(SELECT P2.product_id, P1.new_price FROM Products P1 RIGHT JOIN
+(SELECT product_id, MAX(change_date) as change_date FROM Products WHERE change_date <= "2019-08-16" GROUP BY product_id) P2 ON P1.product_id = P2.product_id AND P1.change_date = P2.change_date) P3
+ON P3.product_id = P4.product_id
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