如何检查值是否大于其他值？

Question

我需要检查一个值是否大于其他每个值。

目前我有这个查询，但它只检查该值是否大于其他所有值：

IF (SELECT SUM(`price`) AS '14' 
    from data 
    where sale = 14) > (
        SELECT SUM(`price`) AS 'x14' 
        from data where sale != 14)
THEN SET New.price=1.99;

虽然我需要它来检查销售（14）相关是否大于（15）且大于（16）..

Answer 1

//DECLARE  price_1 and 2 first 

SELECT SUM(`price`) INTO price_1  from data where sale = 14 ;
SELECT MAX(price_others) INTO max_price FROM 
( 
  SELECT SUM(`price`) as price_others, sale  FROM data 
  where sale != 14 GROUP BY sale 
) TMP ;

IF price_1 > max_price THEN 
  SET New.price=1.99;
END IF ;