AVG(price) OVER (PARTITION BY customer_id ORDER BY price DESC ROWS BETWEEN UNBOUNDED PRECEDING AND 2 FOLLOWING) AS avg_price_top3 LAG(quantity) OVER (PARTITION BY product_id ORDER BY order_date) AS ...

1. Used when we can't logically divide our data (When are unable to find best field or column to use for partition) ...

Abstract: One of the key advantages of cloud computing is the elasticity in which computing resources such as virtual machines can be increased or decreased. Current state-of-the-art shared-nothing ...