SELECT T2.product_name ,  sum(T1.product_quantity) FROM Order_items AS T1 JOIN Products AS T2 ON T1.product_id  =  T2.product_id GROUP BY T2.product_name
Show all product names and the total quantity ordered for each product name.
SELECT T2.product_name , sum ( T1.product_quantity ) FROM Order_items AS T1 JOIN Products AS T2 ON T1.product_id = T2.product_id GROUP BY T2.product_name
select t2 . product_name , sum ( t1 . product_quantity ) from order_items as t1 join products as t2 on t1 . product_id = t2 . product_id group by t2 . product_name
Show all product names and the total quantity ordered for each product name .