我在mysql中有以下查询:
SELECT title, added_on FROM title
结果看起来像这样:
Somos Tão Jovens 2013-10-10 16:54:10 Moulin Rouge - Amor em Vermelho 2013-10-10 16:55:03 Rocky Horror Picture Show (Legendado) 2013-10-10 16:58:30 The X-Files: I Want to Believe 2013-10-10 22:39:11
我想获取每个月的书名计数,因此结果如下所示:
Count Month 42 2013-10-01 20 3013-09-01
我能想到的最接近的是:
SELECT Count(*), Date(timestamp) FROM title GROUP BY Date(timestamp)
但这只是按天分组,而不是按月分组。我如何在这里按月分组?
你可以试试这个吗?
select count(*), DATE_FORMAT(timestamp, "%Y-%m-01") from title group by DATE_FORMAT(timestamp, "%Y-%m-01")
请注意,MONTH()不能区分“ 2013-01-01”和“ 2014-01-01”,如下所示。
MONTH()
mysql> SELECT MONTH('2013-01-01'), MONTH('2014-01-01'); +---------------------+---------------------+ | MONTH('2013-01-01') | MONTH('2014-01-01') | +---------------------+---------------------+ | 1 | 1 | +---------------------+---------------------+