mysql score如何进行统计分析

avatar
作者
猴君
阅读量:0

在MySQL中,可以使用聚合函数和GROUP BY子句对成绩(score)进行统计分析。以下是一些常见的统计分析方法:

  1. 计算平均分:
SELECT AVG(score) as average_score FROM your_table; 
  1. 计算最高分和最低分:
SELECT MIN(score) as min_score, MAX(score) as max_score FROM your_table; 
  1. 计算总分:
SELECT SUM(score) as total_score FROM your_table; 
  1. 按照分数范围进行分组统计:
SELECT      CASE         WHEN score BETWEEN 0 AND 59 THEN '0-59'         WHEN score BETWEEN 60 AND 79 THEN '60-79'         WHEN score BETWEEN 80 AND 99 THEN '80-99'         ELSE '100'     END as score_range,     COUNT(*) as count FROM your_table GROUP BY score_range; 
  1. 按照某个字段(例如:class)进行分组统计:
SELECT class, AVG(score) as average_score, MIN(score) as min_score, MAX(score) as max_score FROM your_table GROUP BY class; 

请将your_table替换为你的表名,并根据需要调整查询语句。

广告一刻

为您即时展示最新活动产品广告消息,让您随时掌握产品活动新动态!