我有一个Sql表HC_RSPI，我想选择并显示记录 只有当一个字段的值在一段时间内的范围内时，我们才说 多个记录连续5或7天。
| RADIO_TYPE | HOP | TOWARDS | RSPI | TP_NAME | DATE_TIME_END | TIME_LENGTH | RLTM_min | RLTM_max |
|------------|-------|-----------------|------|---------------|------------------------|-------------|----------|----------|
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 10 2015 00:00:00 | 86400 | 65 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 10 2015 00:00:00 | 86400 | 74 | 47 |
| FlexiMetro | H3178 | NEAPOLI_LARISSA | RSPI | ODU 1 Radio 1 | June, 10 2015 00:00:00 | 86406 | 37 | 32 |
| FlexiMetro | H3178 | NEAPOLI_LARISSA | RSPI | ODU 2 Radio 2 | June, 10 2015 00:00:00 | 86406 | 48 | 43 |
| FlexiMetro | H3376 | TYRNAVOS_2 | RSPI | ODU 1 Radio 1 | June, 10 2015 00:00:00 | 86396 | 42 | 36 |
| FlexiMetro | H3376 | TYRNAVOS_2 | RSPI | ODU 2 Radio 2 | June, 10 2015 00:00:00 | 86396 | 52 | 46 |
| FlexiMetro | H3301 | LICHADA | RSPI | ODU 1 Radio 1 | June, 10 2015 00:00:00 | 86399 | 58 | 47 |
| FlexiMetro | H3301 | LICHADA | RSPI | ODU 2 Radio 2 | June, 10 2015 00:00:00 | 86399 | 67 | 56 |
| FlexiMetro | H3390 | SKIATHOS | RSPI | ODU 1 Radio 1 | June, 10 2015 00:00:00 | 86397 | 63 | 48 |
| FlexiMetro | H3390 | SKIATHOS | RSPI | ODU 2 Radio 2 | June, 10 2015 00:00:00 | 86397 | 70 | 56 |
| FlexiMetro | H3178 | LARISSA_MTX | RSPI | ODU 1 Radio 1 | June, 10 2015 00:00:00 | 86400 | 38 | 33 |
| FlexiMetro | H3178 | LARISSA_MTX | RSPI | ODU 2 Radio 2 | June, 10 2015 00:00:00 | 86400 | 48 | 44 |
| FlexiMetro | H3442 | ANCHIALOS | RSPI | ODU 1 Radio 1 | June, 10 2015 00:00:00 | 86400 | 53 | 47 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 09 2015 00:00:00 | 86400 | 70 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 09 2015 00:00:00 | 86400 | 74 | 47 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 08 2015 00:00:00 | 86400 | 65 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 08 2015 00:00:00 | 86400 | 74 | 47 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 07 2015 00:00:00 | 86400 | 65 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 07 2015 00:00:00 | 86400 | 74 | 47 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 06 2015 00:00:00 | 86400 | 65 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 06 2015 00:00:00 | 86400 | 74 | 47 |
我想知道，例如RLTM_min是否在一个值范围内，让我们说65-85在一段时间内让我们说4或5天，这意味着我有问题。 在我们的示例中，H3376 RAPSANI ODU 1无线电1和ODU无线电2连续4天在该范围内（65-85），我只想要这些记录。
输出可能是。
| RADIO_TYPE | HOP | TOWARDS | RSPI | TP_NAME | DATE_TIME_END | TIME_LENGTH | RLTM_min | RLTM_max |
|------------|-------|---------|------|---------------|------------------------|-------------|----------|----------|
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 10 2015 00:00:00 | 86400 | 65 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 10 2015 00:00:00 | 86400 | 74 | 47 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 09 2015 00:00:00 | 86400 | 70 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 09 2015 00:00:00 | 86400 | 74 | 47 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 08 2015 00:00:00 | 86400 | 65 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 08 2015 00:00:00 | 86400 | 74 | 47 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 07 2015 00:00:00 | 86400 | 65 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 07 2015 00:00:00 | 86400 | 74 | 47 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 1 Radio 1 | June, 06 2015 00:00:00 | 86400 | 65 | 37 |
| FlexiMetro | H3376 | RAPSANI | RSPI | ODU 2 Radio 2 | June, 06 2015 00:00:00 | 86400 | 74 | 47 |
或者只有带有TOWARDS和TP_NAME的HOP说明哪个有问题。
有没有办法在sql查询中实现它？ 我该如何实现？创建另一个表，进行连接？创建一个视图？
谢谢
答案 0 :(得分：0)
select distinct HC_RSPI_data.*
from (
select
firstDay.RADIO_TYPE
, firstDay.HOP
, firstDay.TOWARDS
, firstDay.RSPI
, firstDay.TP_NAME
, firstDay.DATE_TIME_END as periodBegins
, (firstDay.DATE_TIME_END + INTERVAL 6 DAY) as periodEnds
from HC_RSPI_data as firstDay
inner join HC_RSPI_data as followingDay
on followingDay.RADIO_TYPE = firstDay.RADIO_TYPE
and followingDay.HOP = firstDay.HOP
and followingDay.TOWARDS = firstDay.TOWARDS
and followingDay.RSPI = firstDay.RSPI
and followingDay.TP_NAME = firstDay.TP_NAME
and followingDay.DATE_TIME_END between firstDay.DATE_TIME_END and (firstDay.DATE_TIME_END + INTERVAL 6 DAY)
and ( -- Days when RLTM_min or RLTM_max is between 65-85
followingDay.RLTM_min between 65 and 85
or followingDay.RLTM_max between 65 and 85
)
where ( -- Days when RLTM_min or RLTM_max is between 65-85
firstDay.RLTM_min between 65 and 85
or firstDay.RLTM_max between 65 and 85
)
group by
firstDay.RADIO_TYPE
, firstDay.HOP
, firstDay.TOWARDS
, firstDay.RSPI
, firstDay.TP_NAME
, firstDay.DATE_TIME_END
having sum(1) = 7 -- a period of 7 days with matching values
) as period
inner join HC_RSPI_data
on HC_RSPI_data.RADIO_TYPE = period.RADIO_TYPE
and HC_RSPI_data.HOP = period.HOP
and HC_RSPI_data.TOWARDS = period.TOWARDS
and HC_RSPI_data.RSPI = period.RSPI
and HC_RSPI_data.TP_NAME = period.TP_NAME
and HC_RSPI_data.DATE_TIME_END between period.periodBegins and period.periodEnds
;