如何使用纪元和mysql每小时进行计数？

Question

How can I make a count row created between each hour within 24 hours?

I have a table like this

[ID] [Time(epoch time)]

Thank you

Answer 1

I hope I have understood you question

select from_unixtime(visittime,'%H') as h,count(*) as total
from table
where from_unixtime(visittime) >= now() - interval 1 day
group by h