select device_id, user_id from iot_device_alert_user select du.device_id, du.user_id , u.user_name, u.phonenumber from iot_device_alert_user du left join sys_user u on du.user_id = u.user_id where du.device_id = #{deviceId} where device_id = #{deviceId} insert into iot_device_alert_user device_id, user_id, #{deviceId}, #{userId}, update iot_device_alert_user user_id = #{userId}, where device_id = #{deviceId} delete from iot_device_alert_user where device_id = #{deviceId} delete from iot_device_alert_user where device_id in #{deviceId} delete from iot_device_alert_user where device_id = #{deviceId} and user_id = #{userId}