题解 | 考试分数(四)

考试分数(四)

https://www.nowcoder.com/practice/502fb6e2b1ad4e56aa2e0dd90c6edf3c

with count_temp as (
select job,count(*) as count
from grade
group by job
)
select job,round(count/2) as  start,
case when count%2 != 0 
then round(count/2) 
else round(count/2)+1 
end as end
from count_temp
order by job; 

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