SQL 75) 查询各个岗位分数升序排列之后的中位数位置的范围
考试分数(四)
http://www.nowcoder.com/questionTerminal/502fb6e2b1ad4e56aa2e0dd90c6edf3c
方法）找出中位数位置
SELECT job,
FLOOR((COUNT(score)+1)/2 )AS start,
FLOOR((COUNT(score)+2)/2) AS end
FROM grade
GROUP BY job
ORDER BY job;SQL 文章被收录于专栏
SQL
