"A derived table cannot contain references to other tables of the same SELECT"是什么意思？I looked it up in the MySQL documentation
SELECT
salesperson.name,
max_sale.amount,
max_sale_customer.customer_name
FROM
salesperson,
-- calculate maximum size, cache it in transient derived table max_sale
LATERAL
(SELECT MAX(amount) AS amount
FROM all_sales
WHERE all_sales.salesperson_id = salesperson.id)
AS max_sale,
-- find customer, reusing cached maximum size
LATERAL
(SELECT customer_name
FROM all_sales
WHERE all_sales.salesperson_id = salesperson.id
AND all_sales.amount =
-- the cached maximum size
max_sale.amount)
AS max_sale_customer;
A derived table cannot contain references to other tables of the same SELECT (use a LATERAL derived table for that; see Section 13.2.11.9, “Lateral Derived Tables”)