MySQL|ALL 关键字

-- Select invoices larger than all invoices of client 3

USE sql_invoicing;
SELECT *
FROM invoices
WHERE invoice_total >(
	SELECT MAX(invoice_total)
    FROM invoices
    WHERE invoice_id = 3
)

Other solution(with ALL 关键字)：

USE sql_invoicing;
SELECT *
FROM invoices
WHERE invoice_total > ALL(
	SELECT invoice_total
    FROM invoices
    WHERE invoice_id = 3
)
 -- ALL返回（）里面所有的值，和invoice_total 逐一比较

Output: