mysql> select * from test; +----+----------+-------+-----------+ | id | name | score | subject | +----+----------+-------+-----------+ | 1 | xiaoming | 89 | shuxue | | 2 | xiaohong | 89 | shuxue | | 3 | xiaohong | 80 | english | | 4 | xiaohong | 80 | physics | | 5 | xiaohong | 80 | astronaut | | 6 | xiaoming | 80| Physics | | . 7 | Xiaoming | 80 | Astronaut | | . 8 | Xiaoming | 80 | Dictionary Dictionary English | | . 9 | xiaobai | 80 | Astronaut | | 10 | xiaobai | 80 | Dictionary Dictionary English | | . 11 | xiaobai | 80 | Physics | | 12 is | xiaobai | 80 | shuxue | | 13 | xiaohei | 80 | Astronaut | | 14 | xiaohei | 80 | shuxue | | 15 | xiaohei | 80 | physics | | 16 | xiaohei | 80 | english | +----+----------+-------+-----------+ 16 rows in set (0.00 sec)
Highest score
mysql> select name,score from test where subject='shuxue' order by score desc limit 1; +----------+-------+ | name | score | +----------+-------+ | xiaoming | 89 | +----------+-------+ 1 row in set (0.00 sec)
Lowest score
mysql> select name,score from test where subject='shuxue' order by score limit 1; +---------+-------+ | name | score | +---------+-------+ | xiaohei | 80 | +---------+-------+ 1 row in set (0.00 sec)