`中的属性引用不一致?`轨道中的方法

我不知道 Rails 但它可以很容易地用普通的、老的、好的SQL执行:

def upcoming_events_in(minutes, client_id)
  events.
    where(client_id: client_id).
    where('DATEDIFF(events.start, DATESUB(NOW(), INTERVAL events.duration MINUTES)) > 0').
    where('DATEDIFF(events.start, DATEADD(NOW(), INTERVAL events.minutes MINUTES)) < 0').
    exists?
end

《PostgreSQL》 版本:

def upcoming_events_in(minutes, client_id)
  start = "(TIMESTAMP events.start, TIMESTAMP events.start + INTERVAL '1 MINUTE')"
  interval = "(NOW() - INTERVAL 'events.duration MINUTES', NOW() + INTERVAL 'events.minutes MINUTES')"

  events.
    where(client_id: client_id).
    where("#{start} OVERLAPS #{interval}").
    exists?
end

或者说,我没有PG需要检查。