Mysql 获取复杂查询的计数结果

假设我有这个sql查询

SELECT max(times_viewed) as m, member_id, (select count(viewed_url) from exp_member_page_tracker  where member_id=mpv.member_id)
FROM `exp_member_page_tracker` mpv
group by member_id

我需要计算所有结果。我是这样做的

SELECT count(member_id) from ( SELECT max(times_viewed) as m, member_id, (select count(viewed_url) from exp_member_page_tracker where member_id=mpv.member_id)
FROM `exp_member_page_tracker` mpv
group by member_id) as m2

但我不确定这是如何有效的。你能建议我如何以最好的方式计算结果吗

---

谢谢你的子查询，我是否遗漏了什么，这个结果不是更有效吗？ 在sqlfiddle尝试：

你的：

SELECT member_id, max(times_viewed) as max_times_viewed 
, (select count(viewed_url) from exp_member_page_tracker  where member_id=mpv.member_id) as countOfViewedUrl
FROM `exp_member_page_tracker` mpv
group by member_id;

备选方案：

SELECT member_id, max(times_viewed) as max_times_viewed
, count(viewed_url) as countOfViewedUrl
FROM `exp_member_page_tracker` mpv
group by member_id;

---

我认为如果有100万条记录，它会选择这100万条记录，然后计数。我错了吗？