最常见的小时查询？

Question

我有这张桌子:

ID(INT)    DATE(DATETIME)

在DATE列下面有很多不同的日期,我想弄清楚表中所有行之间最常见的小时,无论哪一天.

我怎么能用MySQL查询呢？

Answer 1

SELECT HOUR(date) AS hr, COUNT(*) AS cnt
FROM yourtable
GROUP BY hr
ORDER BY cnt DESC
LIMIT 1

相关文档:http://dev.mysql.com/doc/refman/5.5/en/date-and-time-functions.html#function_hour