mysql 交叉查询-横向显示数据

有一个表如下：

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='测试数据'
ENGINE=InnoDB
;

数据库中已有数据如下：

INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (1, '张三', '语文', 80);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (2, '张三', '数学', 90);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (3, '张三', '英语', 82);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (4, '李四', '语文', 70);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (5, '李四', '数学', 85);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (6, '李四', '英语', 90);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (7, '马武', '语文', 50);
INSERT INTO `student` (`id`, `name`, `subject`, `score`) VALUES (8, '马武', '数学', 97);

交叉查询，横向显示数据如下：

select 
name, sum(s.score) as sum,
(case when s.subject='语文' then s.score else null end) as 语文,
sum(case when s.subject='数学' then s.score else null end) as 数学,
sum(case when s.subject='英语' then s.score else null end) as 英语
from student s
group by name


显示：

INSERT INTO `student` (`name`, `sum`, `语文`, `数学`, `英语`) VALUES ('张三', 252, 80, 90, 82);
INSERT INTO `student` (`name`, `sum`, `语文`, `数学`, `英语`) VALUES ('李四', 245, 70, 85, 90);
INSERT INTO `student` (`name`, `sum`, `语文`, `数学`, `英语`) VALUES ('马武', 147, 50, 97, NULL);