Show order ids and the total quantity in each order.
CREATE TABLE Order_items (order_id VARCHAR, product_quantity INTEGER)
SELECT order_id, SUM(product_quantity) FROM Order_items GROUP BY order_id
### Context: CREATE TABLE Order_items (order_id VARCHAR, product_quantity INTEGER) ### Question: Show order ids and the total quantity in each order. ### Answer: SELECT order_id, SUM(product_quantity) FROM Order_items GROUP BY order_id