Сколько накрутил клиент за какое-то время

SET @time_from = '2019-03-20 14:28:07'
SET @time_to   = '2019-03-20 13:01:25'
SET @owner_id  = 25

SELECT
     SUM(tasks.now_add)  AS now,
     SUM(tasks.need_add) AS need,
     "comment" AS TYPE
FROM likepanel.tasks
WHERE
     tasks.TYPE='comment'
     AND tasks.CREATE < @time_from
     AND tasks.CREATE > @time_to
     AND tasks.owner_id = @owner_id

UNION

SELECT
     SUM(tasks.now_add)  AS now,
     SUM(tasks.need_add) AS need,
     "like" AS TYPE
FROM likepanel.tasks
WHERE
     tasks.TYPE='like'
     AND tasks.CREATE < @time_from
     AND tasks.CREATE > @time_to
     AND tasks.owner_id = @owner_id