我在MySQL中有表:
问题:如何将每一行按距离范围分组1小时?
通缉输出:
range1 = 2014-01-28 00:00:00 to 2014-01-28 01:00:00
range2 = 2014-01-28 01:00:00 to 2014-01-28 02:00:00
range3 = 2014-01-28 02:00:00 to 2014-01-28 03:00:00
...
Array
(
[range1] => Array
(
[id] => 1
[time] => 2014-01-28 00:00:00
)
[range2] => Array
(
[id] => 2
[time] => 2014-01-28 01:05:00
)
[range3] => Array
(
[id] => 3
[time] => 2014-01-28 02:00:00
)
)
我的尝试:
PHP:
function get_data() {
$start = date("Y-m-d 00:00:00");
$end = date("Y-m-d H:i:s", strtotime('+1 DAY', strtotime($start)));
$q = "
SELECT *
FROM table
WHERE (time BETWEEN '" . $start . "' AND '" . $end . "')
";
$select = mysqli_query($this->c, $q);
while ($row = mysqli_fetch_assoc($select)) {
$data[] = $row;
}
return $data;
}
当前输出:
Array
(
[0] => Array
(
[id] => 1
[time] => 2014-01-28 00:00:00
)
[1] => Array
(
[id] => 2
[time] => 2014-01-28 01:05:00
)
[2] => Array
(
[id] => 3
[time] => 2014-01-28 02:00:00
)
)
答案 0 :(得分:0)
SELECT * FROM table WHERE time BETWEEN '$start' AND '$end' GROUP BY DATE(time),DATEPART(hh,time)
此查询将按同一天的小时分组,其中2个值之间的时间