推荐答案更新了新的测试用例这是一种计算独特中断的技术,然后将它们与导致中断的初始停机时间对齐,从而使实际值和预期值匹配.Here is one technique that calculates the unique outages and then aligns them back to the initial downtime causing the outage so that the actual and expected values match.DECLARE @Downtime TABLE ( ID INT PRIMARY KEY NOT NULL IDENTITY(1,1), Application VARCHAR(25), DowntimeStart DATETIME, DowntimeEnd DATETIME, Expected INT)INSERT @Downtime (Application, DowntimeStart, DowntimeEnd, Expected) VALUES -- Act/Exp ('Application Demo', '2014-11-20 17:31:01.467', '2014-11-20 18:01:01.243', 30) -- 30/30 ,('Application Demo', '2014-11-28 17:59:00.987', '2014-11-28 18:09:02.167', 26) -- 10/26 ,('Application Demo', '2014-11-28 18:00:01.403', '2014-11-28 18:25:01.443', 0) -- 25/0 ,('Application Demo', '2014-11-29 19:13:08.580', '2014-11-30 05:30:01.763', 617) -- 617/617 ,('Application Demo', '2014-11-30 01:55:01.953', '2014-11-30 03:54:01.730', 0) ,('Application Demo 2', '2014-12-19 23:09:01.303', '2014-12-22 09:43:01.397', 3514) ,('Application Demo 2', '2014-12-19 23:09:01.303', '2014-12-22 09:43:01.397', 0) ,('Application Demo 2', '2014-12-19 23:09:01.303', '2014-12-22 09:43:01.397', 0) ,('Application Demo 2', '2014-12-19 23:09:01.303', '2014-12-22 09:43:01.397', 0) ,('Application Demo 2', '2014-12-19 23:09:01.303', '2014-12-22 09:43:01.397', 0)SELECT Downtimes.Application, Downtimes.DowntimeStart, Downtimes.DowntimeEnd, Downtimes.Expected, COALESCE(Actual, 0) AS ActualFROM @Downtime Downtimes LEFT OUTER JOIN ( SELECT DISTINCT D1.Application, MIN(CASE WHEN D1.DowntimeStart < D2.DowntimeStart THEN D1.ID ELSE D2.ID END) AS [ID], MIN(CASE WHEN D1.DowntimeStart < D2.DowntimeStart THEN D1.DowntimeStart ELSE D2.DowntimeStart END) AS [DowntimeStart], MAX(CASE WHEN D1.DowntimeEnd > D2.DowntimeEnd THEN D1.DowntimeEnd ELSE D2.DowntimeEnd END) AS [DowntimeEnd], DATEDIFF(MINUTE, MIN(CASE WHEN D1.DowntimeStart < D2.DowntimeStart THEN D1.DowntimeStart ELSE D2.DowntimeStart END), MAX(CASE WHEN D1.DowntimeEnd > D2.DowntimeEnd THEN D1.DowntimeEnd ELSE D2.DowntimeEnd END)) AS Actual FROM @Downtime D1 INNER JOIN @Downtime D2 ON D1.Application = D2.Application AND (D1.DowntimeStart BETWEEN D2.DowntimeStart AND D2.DowntimeEnd OR D2.DowntimeStart BETWEEN D1.DowntimeStart AND D1.DowntimeEnd) GROUP BY D1.Application, D1.DowntimeStart ) Outages ON Outages.ID = Downtimes.ID这会产生所需的输出:Application DowntimeStart DowntimeEnd Expected Actual------------------------- ----------------------- ----------------------- ----------- -----------Application Demo 2014-11-20 17:31:01.467 2014-11-20 18:01:01.243 30 30Application Demo 2014-11-28 17:59:00.987 2014-11-28 18:09:02.167 26 26Application Demo 2014-11-28 18:00:01.403 2014-11-28 18:25:01.443 0 0Application Demo 2014-11-29 19:13:08.580 2014-11-30 05:30:01.763 617 617Application Demo 2014-11-30 01:55:01.953 2014-11-30 03:54:01.730 0 0Application Demo 2 2014-12-19 23:09:01.303 2014-12-22 09:43:01.397 3514 3514Application Demo 2 2014-12-19 23:09:01.303 2014-12-22 09:43:01.397 0 0Application Demo 2 2014-12-19 23:09:01.303 2014-12-22 09:43:01.397 0 0Application Demo 2 2014-12-19 23:09:01.303 2014-12-22 09:43:01.397 0 0Application Demo 2 2014-12-19 23:09:01.303 2014-12-22 09:43:01.397 0 0 这篇关于计算实际停机时间忽略日期/时间重叠的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 上岸,阿里云!
08-20 08:49
查看更多