我需要一些帮助。我有一张个人联系表（即电话），其中包含到达时间和持续时间。我需要能够计算每个15分钟间隔内收到的联系数量，以及求和每个间隔内的“通话时间”。应答的计数将固定在到达的间隔中，持续时间的适当部分将在联系人的“时钟正在运行”的每个间隔进行计数。
例如，联系人到达2018-12-06 07：15：01.000，持续超过15分钟（947秒）。我怎样才能使900秒以7:15的间隔出现，而剩下的47秒以7:30的间隔出现？
下面是一些CTE形式的测试数据。
我已经弄清楚了15分钟的间隔部分，但是我不知道如何处理持续时间总和。我尝试了几件事，但我的大脑被卡住了。我也许最终可以弄清楚，但是我在这个项目中所采取的方向取决于我能否迅速获得成功。我知道这是可能的，因为源GUI上的内置报表查看器可以做到这一点。
如果能获得任何帮助，我将不胜感激。
;with cteTestData as (
SELECT 1 as ID, '2018-12-06 07:03:27.000' as ContactStartTime, Sum(Left('00:04:28',2) * 3600 + substring('00:04:28', 4,2) * 60 + substring('00:04:28', 7,2)) as Duration
UNION ALL
SELECT 2 as ID, '2018-12-06 07:03:32.000' as ContactStartTime, Sum(Left('00:14:28',2) * 3600 + substring('00:14:28', 4,2) * 60 + substring('00:14:28', 7,2)) as Duration
UNION ALL
SELECT 3 as ID, '2018-12-06 07:08:12.000' as ContactStartTime, Sum(Left('00:10:03',2) * 3600 + substring('00:10:03', 4,2) * 60 + substring('00:10:03', 7,2)) as Duration
UNION ALL
SELECT 4 as ID, '2018-12-06 07:14:59.000' as ContactStartTime, Sum(Left('00:02:58',2) * 3600 + substring('00:02:58', 4,2) * 60 + substring('00:02:58', 7,2)) as Duration
UNION ALL
SELECT 5 as ID, '2018-12-06 07:15:01.000' as ContactStartTime, Sum(Left('00:15:47',2) * 3600 + substring('00:15:47', 4,2) * 60 + substring('00:15:47', 7,2)) as Duration
UNION ALL
SELECT 6 as ID, '2018-12-06 07:15:12.000' as ContactStartTime, Sum(Left('00:08:18',2) * 3600 + substring('00:08:18', 4,2) * 60 + substring('00:08:18', 7,2)) as Duration
UNION ALL
SELECT 7 as ID, '2018-12-06 07:18:50.000' as ContactStartTime, Sum(Left('00:10:22',2) * 3600 + substring('00:10:22', 4,2) * 60 + substring('00:10:22', 7,2)) as Duration
UNION ALL
SELECT 8 as ID, '2018-12-06 07:20:05.000' as ContactStartTime, Sum(Left('00:03:11',2) * 3600 + substring('00:03:11', 4,2) * 60 + substring('00:03:11', 7,2)) as Duration
UNION ALL
SELECT 9 as ID, '2018-12-06 07:29:32.000' as ContactStartTime, Sum(Left('00:32:53',2) * 3600 + substring('00:32:53', 4,2) * 60 + substring('00:32:53', 7,2)) as Duration
UNION ALL
SELECT 10 as ID, '2018-12-06 07:35:17.000' as ContactStartTime, Sum(Left('00:07:37',2) * 3600 + substring('00:07:37', 4,2) * 60 + substring('00:07:37', 7,2)) as Duration
)
select ID, ContactStartTime
, DATEADD(minute, (DATEDIFF( minute, 0, ContactStartTime) / 15) * 15, 0) AS ContactStartInterval
, Duration
FROM cteTestData
ORDER BY ContactStartTime
编辑：这是Squirrel的更新查询，其中添加了注释。
;with
cteTestData /*this will not be necessary in the production query, as this CTE will be replaced with the actual source table*/
as
(
SELECT 1 as ID, '2018-12-06 07:03:27.000' as ContactStartTime, (Left('00:04:28',2) * 3600 + substring('00:04:28', 4,2) * 60 + substring('00:04:28', 7,2)) as Duration
UNION ALL
SELECT 2 as ID, '2018-12-06 07:03:32.000' as ContactStartTime, (Left('00:14:28',2) * 3600 + substring('00:14:28', 4,2) * 60 + substring('00:14:28', 7,2)) as Duration
UNION ALL
SELECT 3 as ID, '2018-12-06 07:08:12.000' as ContactStartTime, (Left('00:10:03',2) * 3600 + substring('00:10:03', 4,2) * 60 + substring('00:10:03', 7,2)) as Duration
UNION ALL
SELECT 4 as ID, '2018-12-06 07:14:59.000' as ContactStartTime, (Left('00:02:58',2) * 3600 + substring('00:02:58', 4,2) * 60 + substring('00:02:58', 7,2)) as Duration
UNION ALL
SELECT 5 as ID, '2018-12-06 07:15:01.000' as ContactStartTime, (Left('00:15:47',2) * 3600 + substring('00:15:47', 4,2) * 60 + substring('00:15:47', 7,2)) as Duration
UNION ALL
SELECT 6 as ID, '2018-12-06 07:15:12.000' as ContactStartTime, (Left('00:08:18',2) * 3600 + substring('00:08:18', 4,2) * 60 + substring('00:08:18', 7,2)) as Duration
UNION ALL
SELECT 7 as ID, '2018-12-06 07:18:50.000' as ContactStartTime, (Left('00:10:22',2) * 3600 + substring('00:10:22', 4,2) * 60 + substring('00:10:22', 7,2)) as Duration
UNION ALL
SELECT 8 as ID, '2018-12-06 07:20:05.000' as ContactStartTime, (Left('00:03:11',2) * 3600 + substring('00:03:11', 4,2) * 60 + substring('00:03:11', 7,2)) as Duration
UNION ALL
SELECT 9 as ID, '2018-12-06 07:29:32.000' as ContactStartTime, (Left('00:32:53',2) * 3600 + substring('00:32:53', 4,2) * 60 + substring('00:32:53', 7,2)) as Duration
UNION ALL
SELECT 10 as ID, '2018-12-06 07:35:17.000' as ContactStartTime, (Left('00:07:37',2) * 3600 + substring('00:07:37', 4,2) * 60 + substring('00:07:37', 7,2)) as Duration
),
cteIntervalNumbers as /*tally table to generate a number for each interval*/
(
SELECT num = 1
union all
SELECT num = num + 1
FROM cteIntervalNumbers
WHERE num < 99
)
,
cteTimes as /*CTE to calculate ContactEndTime, ContactStartInterval, ContactEndInterval*/
(
SELECT ID, ContactStartTime
, Duration
, DATEADD(second, Duration, ContactStartTime) AS ContactEndTime
, DATEADD(minute, (DATEDIFF( minute, 0, ContactStartTime) / 15) * 15, 0) AS ContactStartInterval
, DATEADD(minute, (DATEDIFF( minute, 0, DATEADD(second, Duration, ContactStartTime)) / 15) * 15 + 15, 0) AS ContactEndInterval
FROM cteTestData /*this will be the source table*/
)
SELECT IntervalStart, count(DISTINCT ID) as Contacts, SUM(DurationInterval) as TalkTime
FROM (
SELECT *
,
CASE
/*all of the time exists in the interval; just find the difference in start and end, which will be the entire duration*/
WHEN ContactStartTime >= IntervalStart AND ContactStartTime < IntervalEnd
AND ContactEndTime >= IntervalStart AND ContactEndTime < IntervalEnd
THEN DATEDIFF(second, ContactStartTime, ContactEndTime)
/*contact carries over into next interval; get time between the start time and the end of that interval*/
WHEN ContactStartTime >= IntervalStart AND ContactStartTime < IntervalEnd
AND ContactEndTime > IntervalEnd
THEN DATEDIFF(second, ContactStartTime, IntervalEnd)
/*this will get the elapsed time in the carry over intervals where the contact ends within that interval*/
WHEN ContactStartTime < IntervalStart
AND ContactEndTime >= IntervalStart AND ContactEndTime < IntervalEnd
THEN DATEDIFF(second, IntervalStart, ContactEndTime)
/*this is for all intervals where the contact neither starts nor ends i.e. where the full elapsed time of the interval is needed*/
ELSE DATEDIFF(second, IntervalStart, IntervalEnd)
END AS DurationInterval
FROM cteTimes d
CROSS JOIN cteIntervalNumbers n
CROSS APPLY /*this calcualtes the start and end time for each interval that the contact crossed*/
(
SELECT DATEADD(minute, (num - 1) * 15, ContactStartInterval) AS IntervalStart
,DATEADD(minute, num * 15, ContactStartInterval) AS IntervalEnd
) i
/*only show intervals crossed by each contact*/
WHERE n.num <= datediff(minute, ContactStartInterval, ContactEndInterval) / 15 /*how many intervals does the contact cross?*/
) rawdata
GROUP BY IntervalStart
答案 0 :(得分：0)
请参考查询中的注释进行解释。
基本上，它会检查间隔内有多少时间
|--------|---------|--------| interval
S...E [1]
S.... [2]
....E [3]
......... [4]
;with
cteTestData -- Your Sample Data
as
(
SELECT 1 as ID, '2018-12-06 07:03:27.000' as ContactStartTime, (Left('00:04:28',2) * 3600 + substring('00:04:28', 4,2) * 60 + substring('00:04:28', 7,2)) as Duration
UNION ALL
SELECT 2 as ID, '2018-12-06 07:03:32.000' as ContactStartTime, (Left('00:14:28',2) * 3600 + substring('00:14:28', 4,2) * 60 + substring('00:14:28', 7,2)) as Duration
UNION ALL
SELECT 3 as ID, '2018-12-06 07:08:12.000' as ContactStartTime, (Left('00:10:03',2) * 3600 + substring('00:10:03', 4,2) * 60 + substring('00:10:03', 7,2)) as Duration
UNION ALL
SELECT 4 as ID, '2018-12-06 07:14:59.000' as ContactStartTime, (Left('00:02:58',2) * 3600 + substring('00:02:58', 4,2) * 60 + substring('00:02:58', 7,2)) as Duration
UNION ALL
SELECT 5 as ID, '2018-12-06 07:15:01.000' as ContactStartTime, (Left('00:15:47',2) * 3600 + substring('00:15:47', 4,2) * 60 + substring('00:15:47', 7,2)) as Duration
UNION ALL
SELECT 6 as ID, '2018-12-06 07:15:12.000' as ContactStartTime, (Left('00:08:18',2) * 3600 + substring('00:08:18', 4,2) * 60 + substring('00:08:18', 7,2)) as Duration
UNION ALL
SELECT 7 as ID, '2018-12-06 07:18:50.000' as ContactStartTime, (Left('00:10:22',2) * 3600 + substring('00:10:22', 4,2) * 60 + substring('00:10:22', 7,2)) as Duration
UNION ALL
SELECT 8 as ID, '2018-12-06 07:20:05.000' as ContactStartTime, (Left('00:03:11',2) * 3600 + substring('00:03:11', 4,2) * 60 + substring('00:03:11', 7,2)) as Duration
UNION ALL
SELECT 9 as ID, '2018-12-06 07:29:32.000' as ContactStartTime, (Left('00:32:53',2) * 3600 + substring('00:32:53', 4,2) * 60 + substring('00:32:53', 7,2)) as Duration
UNION ALL
SELECT 10 as ID, '2018-12-06 07:35:17.000' as ContactStartTime, (Left('00:07:37',2) * 3600 + substring('00:07:37', 4,2) * 60 + substring('00:07:37', 7,2)) as Duration
),
numbers as -- recursive CTE as number / tally table
(
SELECT n = 1
union all
SELECT n = n + 1
FROM numbers
WHERE n < 99
),
cte as -- CTE for calculate ContactEndTime, ContactStartInterval, ContactEndInterval
(
SELECT ID, ContactStartTime
, Duration
, DATEADD(second, Duration, ContactStartTime) AS ContactEndTime
, DATEADD(minute, (DATEDIFF( minute, 0, ContactStartTime) / 15) * 15, 0) AS ContactStartInterval
, DATEADD(minute, (DATEDIFF( minute, 0, DATEADD(second, Duration, ContactStartTime)) / 15) * 15 + 15, 0) AS ContactEndInterval
FROM cteTestData
)
-- the main query.
SELECT *,
CASE
-- [1]
WHEN ContactStartTime >= IntervalStart AND ContactStartTime < IntervalEnd
AND ContactEndTime >= IntervalStart AND ContactEndTime < IntervalEnd
THEN DATEDIFF( second, ContactStartTime, ContactEndTime)
-- [2]
WHEN ContactStartTime >= IntervalStart AND ContactStartTime < IntervalEnd
AND ContactEndTime > IntervalEnd
THEN DATEDIFF( second, ContactStartTime, IntervalEnd)
-- [3]
WHEN ContactStartTime < IntervalStart
AND ContactEndTime >= IntervalStart AND ContactEndTime < IntervalEnd
THEN DATEDIFF( second, IntervalStart, ContactEndTime)
-- [4]
ELSE DATEDIFF( second, IntervalStart, IntervalEnd)
END AS DurationInterval
FROM cte d
CROSS JOIN numbers n
CROSS APPLY -- this calcualtes the start and end time for each interval
(
SELECT DATEADD( minute, (n - 1) * 15, ContactStartInterval) AS IntervalStart
,DATEADD( minute, n * 15, ContactStartInterval) AS IntervalEnd
) i
WHERE n.n <= datediff(minute, ContactStartInterval, ContactEndInterval) / 15
ORDER BY ContactStartTime, n