mysql 时间范围内分时段分组排序

SELECT
nums,
count(*) TimesParSum,
sum(CHARGE_TOTAL) TimesParSum
FROM (
SELECT
CASE
WHEN REALSTARTTIME >= '20170623000000'
AND REALENDTIME < '20170623040000' THEN
1
WHEN REALSTARTTIME >= '20170623040000'
AND REALENDTIME < '20170623080000' THEN
2
WHEN REALSTARTTIME >= '20170623080000'
AND REALENDTIME < '20170623120000' THEN
3
WHEN REALSTARTTIME >= '20170623120000'
AND REALENDTIME < '20170623160000' THEN
4
WHEN REALSTARTTIME >= '20170623160000'
AND REALENDTIME < '20170623200000' THEN
5
WHEN REALSTARTTIME >= '20170623200000'
AND REALENDTIME < '201706231235959' THEN
6
END as nums
FROM
order_info
WHERE
CREATED_USER = '0E566186A56FB870'
AND REALSTARTTIME >= '20170623000000'
AND REALENDTIME <=   '201706231235959'

) t GROUP BY nums order by nums ASC

最近在项目中遇到一个需要对表中的数据，按照一个给定的时间间隔分组并统计个数，需求如图：



解决方案：

如上代码

ps：如果时间区域跨越两个时间段，eg：start 02：00~ end 06：00，这种根据相应的需求进行解决，1：可以取单独一个startTime or endTime进行sql作对比