Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### 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