MySQL uses gourp by to get the maximum value of a field after grouping

1. Business description

In daily development, everyone inevitably encounters business requirements such as grouping a table and taking the maximum value and the latest value, which involves the group by and max functions. for example:

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for score
-- ----------------------------
DROP TABLE IF EXISTS `score`;
CREATE TABLE `score` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(36) DEFAULT NULL,
  `subject` varchar(36) DEFAULT NULL,
  `score` int(10) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=10 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of score
-- ----------------------------
INSERT INTO `score` VALUES ('1', '张三', '语文', '92');
INSERT INTO `score` VALUES ('2', '张三', '数学', '100');
INSERT INTO `score` VALUES ('3', '李四', '语文', '95');
INSERT INTO `score` VALUES ('4', '李四', '数学', '75');
INSERT INTO `score` VALUES ('5', '王五', '语文', '85');
INSERT INTO `score` VALUES ('6', '王五', '数学', '96');
INSERT INTO `score` VALUES ('7', '张三', '英语', '99');
INSERT INTO `score` VALUES ('8', '李四', '英语', '76');
INSERT INTO `score` VALUES ('9', '王五', '英语', '99');

Here is a business: take out everyone's best score in a single subject.

Second, the problem reappears

My first thought of SQL is:

select name,subject,max(score) from score group by name

The result of the operation is:

you can see that the name and score are correct, but the subjects are all Chinese. Obviously inconsistent with reality! (Group by takes the first data by default)

Note:
I tried again here to sort first, then group values, but the result is still the same as above

select 
	temp.name,temp.subject,max(temp.score) 
from 
	(select * from score order by score desc) temp 
group by temp.name

Three, the solution

1. First take out the name and maximum score

select name,max(score) from score group by name

2. Use the data queried above as a temporary table to query the original table

select 
	temp_b.name,temp_b.subject,temp_b.score 
from
	(select name,max(score) score from score group by name) temp_a
	inner join score temp_b 
on  
	temp_a.name = temp_b.name and temp_a.score = temp_b.score

The final result is: the

problem is solved, I hope it can help everyone. If you have a better solution, please leave a message in the comment area.