将bigint转换为天数

Question

SELECT FROM_UNIXTIME(date_of_registration, '%Y-%m-%d %H:%i:%s') AS user_registeredon, 
            FROM_UNIXTIME(renewal_date, '%Y-%m-%d %H:%i:%s') AS expiry_date,
            a.agent_id
     FROM ta_agent a,
          ta_subscription s
     WHERE s.agent_id = a.agent_id

我的输出

我想以天数显示到期日。例如：69天过期。如何将bigint转换为天数？

Answer 1

SELECT FROM_UNIXTIME(date_of_registration, '%Y-%m-%d %H:%i:%s') AS user_registeredon, 
        ROUND((renewal_date - date_of_registration)/(60*60*24)) AS expiry_date,
        a.agent_id
 FROM ta_agent a,
      ta_subscription s
 WHERE s.agent_id = a.agent_id