mysql 交叉查詢-橫向顯示數據

有一個表如下：

CREATE TABLE `student` (
	`id` INT(11) NOT NULL AUTO_INCREMENT,
	`name` VARCHAR(50) NOT NULL DEFAULT '0',
	`subject` VARCHAR(50) NOT NULL DEFAULT '0',
	`score` INT(11) NOT NULL DEFAULT '0',
	PRIMARY KEY (`id`)
)
COMMENT='測試數據'
ENGINE=InnoDB
;

數據庫中已有數據如下：

INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (1, '張三', '語文', 80);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (2, '張三', '數學', 90);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (3, '張三', '英語', 82);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (4, '李四', '語文', 70);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (5, '李四', '數學', 85);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (6, '李四', '英語', 90);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (7, '馬武', '語文', 50);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (8, '馬武', '數學', 97);

交叉查詢，橫向顯示數據如下：

select 
name, sum(s.score) as sum,
(case when s.subject='語文' then s.score else null end) as 語文,
sum(case when s.subject='數學' then s.score else null end) as 數學,
sum(case when s.subject='英語' then s.score else null end) as 英語
from student s
group by name


顯示：

INSERT INTO `student` (`name`, `sum`, `語文`, `數學`, `英語`) VALUES ('張三', 252, 80, 90, 82);
INSERT INTO `student` (`name`, `sum`, `語文`, `數學`, `英語`) VALUES ('李四', 245, 70, 85, 90);
INSERT INTO `student` (`name`, `sum`, `語文`, `數學`, `英語`) VALUES ('馬武', 147, 50, 97, NULL);