RIGHT, LEFT, और OUTER joins

WITH orders AS (
  SELECT order_id, item.product_id
  FROM ecommerce.ecomm_orders, UNNEST(order_items) item
  LIMIT 10
),
products AS (
  SELECT product_id
  FROM ecommerce.ecomm_products
  LIMIT 10000
)
SELECT
	COUNT(*) AS orders
FROM orders o
-- Add the correct join to include all the values from the "orders" table
___ products p ON p.product_id = o.product_id;