题解 | #最差是第几名(二)#
最差是第几名(二)
https://www.nowcoder.com/practice/165d88474d434597bcd2af8bf72b24f1
#利用正序和逆序进行排列 select grade from ( select grade ,(select sum(number) from class_grade) cnt ,sum(number)over(order by grade) t1 ,sum(number)over(order by grade desc) t2 from class_grade )table1 where t1 >= cnt/2 and t2>= cnt/2 order by 1