CREATE TABLE Customer_Orders (Order_Date VARCHAR2, Order_ID VARCHAR2)
CREATE TABLE ORDER_ITEMS (Order_ID VARCHAR2, Product_ID VARCHAR2)
CREATE TABLE Products (Product_ID VARCHAR2, Product_price NUMBER)

What are the order dates of orders with price higher than 1000?
SELECT T1.Order_Date FROM Customer_Orders AS T1 JOIN ORDER_ITEMS AS T2 ON T1.Order_ID = T2.Order_ID JOIN Products AS T3 ON T2.Product_ID = T3.Product_ID WHERE T3.Product_price > 1000
SELECT "T1"."Order_Date" FROM "Customer_Orders" "T1" JOIN "ORDER_ITEMS" "T2" ON "T1"."Order_ID" = "T2"."Order_ID" JOIN "Products" "T3" ON "T2"."Product_ID" = "T3"."Product_ID" AND "T3"."Product_price" > 1000