what are the actual delivery dates of orders with quantity 1?
select t1.actual_delivery_date from customer_orders as t1 join order_items as t2 on t1.order_id = t2.order_id where t2.order_quantity = 1
what is the order date of order id 1?
select order_date from customer_orders where order_id = 1
Customer id of order id 1
select customer_id from customer_orders where order_id = 1
what is Planned Delivery Date of customer id 516
select planned_delivery_date from customer_orders where customer_id = 516