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如何在单个查询中从时间戳列中选择不同年份和不同月份，如下所示

我试过select distinct year(sc_ts) as years from posts where user_id = 1 order by years asc了，我不知何故无法将月份部分放在那里。或者这需要两个不同的语句和php处理。

我打算将其输出为

2009 - Mar, Apr, May
2010 - Apr, Jun, Jul

ETC

"2009-03-22 16:07:48"
"2009-04-22 16:07:48"
"2009-05-22 16:07:48"
"2010-04-22 16:07:48"
"2010-06-22 16:07:48"
"2010-07-22 16:07:48"
"2011-01-22 16:07:48"
"2011-02-22 16:07:48"
"2011-05-22 16:07:48"
"2011-06-22 16:07:48"
"2011-08-22 16:07:48"
"2012-01-22 16:07:48"
"2012-02-22 16:07:48"
"2012-03-22 16:07:48"
"2012-04-22 16:07:48"
"2012-08-22 16:07:48"
4

3 回答 3

4 
select distinct year(sc_ts) as years, group_concat(monthname(sc_ts)) as months from posts where user_id = 1 order by years asc

编辑：我month()最初使用它给出了月份编号，使用monthname()返回月份的名称。

于 2012-08-22T12:11:20.500 回答
2 
SELECT x.`Year`, GROUP_CONCAT(x.`Month`) AS Months
FROM
    (
        SELECT DISTINCT YEAR(sc_ts) AS `Year`, MONTHNAME(sc_ts) AS `Month`
        FROM
            `posts`
        WHERE
            user_id = 1
        ORDER BY
            MONTH(sc_ts)
    ) x
GROUP BY
    x.`Year`
ORDER BY
    x.`Year`
于 2012-08-22T12:18:38.673 回答
0

尝试SELECT distinct SUBSTRING(year(sc_ts), 6)

于 2012-08-22T12:24:53.457 回答