SELECT order_date, amount,
SUM(amount) OVER (ORDER BY order_date ROWS BETWEEN 2 PRECEDING AND CURRENT ROW) AS rows_sum,
SUM(amount) OVER (ORDER BY order_date RANGE BETWEEN INTERVAL 2 DAY PRECEDING AND CURRENT ROW) AS range_sum
FROM orders;
当存在相同order_date的多条记录时，以下说法正确的是：
