SELECT sum(t3.order_quantity) FROM customers AS t1 JOIN customer_orders AS t2 ON t1.customer_id  =  t2.customer_id JOIN order_items AS t3 ON t2.order_id  =  t3.order_id WHERE t1.customer_name  =  "Rodrick Heaney"
Tell me the total quantity of products bought by the customer called "Rodrick Heaney".
SELECT sum ( t3.order_quantity ) FROM customers AS t1 JOIN customer_orders AS t2 ON t1.customer_id = t2.customer_id JOIN order_items AS t3 ON t2.order_id = t3.order_id WHERE t1.customer_name = `` Rodrick Heaney ''
select sum ( t3 . order_quantity ) from customers as t1 join customer_orders as t2 on t1 . customer_id = t2 . customer_id join order_items as t3 on t2 . order_id = t3 . order_id where t1 . customer_name = value
Tell me the total quantity of products bought by the customer called `` Rodrick Heaney '' .