题解 | 考试分数(四)
考试分数(四)
https://www.nowcoder.com/practice/502fb6e2b1ad4e56aa2e0dd90c6edf3c
with
t1 as(
select
job,
floor((count(*)+1)/2) as start,
ceiling((count(*)+1)/2) as end
from
grade
group by
job
order by
job
)
select * from t1