-3
下面的mysql问题只返回10个第一行。我怎么能限制他们到10%?如何将查询结果限制在MySQL中结果总数的百分比?
SELECT page,
poso,
diff
FROM (SELECT page,
Count(*) AS poso,
(Sum(Date(timestamp) = Curdate()) - Sum(
Date(timestamp) = Date_sub(Curdate(),
INTERVAL 1 day)))
diff
FROM `behaviour`
WHERE Date(timestamp) >= Date_sub(Curdate(), INTERVAL 1 day)
GROUP BY page
ORDER BY (Sum(Date(timestamp) = Curdate()) - Sum(
Date(timestamp) = Date_sub(Curdate(),
INTERVAL 1 day))
) DESC
LIMIT 10) AS u
ORDER BY diff DESC
的可能的复制[MySQL的:限制由记录量的百分比(http://stackoverflow.com/questions/5615172/mysql-limit-by-a-of-the-of-the-records) –