Mysql语句：right join 和where查询条件(前一天18:00到当前时间)

select c.id,c.name,ifnull(ca.capture_time,NOW()) as ca_time,c.address,c.longitude,c.latitude,ifnull(sum(ca.capture_num),0) as amount
from (select * from capture_info where capture_time	>= DATE_FORMAT(date_sub(NOW(),interval 1 day),'%Y-%m-%d 18:00:00') and capture_time <= NOW()) as ca
right join camera c
on c.id = ca.camera_id
GROUP BY c.id