我有一个值看起来像这样的表
id time_stamp value
1 2013-01-01 00:00:15 10
2 2013-01-01 01:00:15 5
3 2013-01-02 00:00:15 15
4 2013-01-02 01:00:15 20
5 2013-02-01 00:00:15 18
6 2013-02-01 01:00:15 15
7 2013-02-02 00:00:15 5
8 2013-02-02 01:00:15 17
9 2014-01-01 00:00:15 8
10 2014-01-01 01:00:15 5
11 2014-01-02 00:00:15 15
12 2014-01-02 01:00:15 30
13 2014-02-01 00:00:15 18
14 2014-02-01 01:00:15 15
15 2014-02-02 00:00:15 5
16 2014-02-02 01:00:15 17
从此表中,我想根据小时、日、月、年选择第一条记录值和最后一条记录值例如,我选择基于的值
天:
id time_stamp start_value end_value
1 2013-01-01 10 5
2 2013-01-02 15 20
3 2013-02-01 18 15
and so on
Month:
id time_stamp start_value end_value
1 2013 jan 10 20
2 2013 feb 18 17
3 2014 jan 8 30
4 2014 feb 18 17
Year:
id time_stamp start_value end_value
1 2013 10 17
2 2014 8 17
我怎样才能做到这一点?