Question

我的表包含以下格式的两个工厂的关闭事件：

ID  Shutdown_Start     Shutdown_End     Plant  DayCode Event_Description

1   2017-03-01 06:00   017-03-01 15:00  2      1        AA
2   2017-03-01 09:00   017-03-01 20:00  1      1        BB
3   2017-03-02 08:00   017-03-02 19:00  2      2        CC
4   2017-03-06 13:00   017-03-06 23:00  1      6        DD
5   2017-03-20 09:00   017-03-21 06:00  2      20       EE
6   2017-03-23 06:00   017-03-24 06:00  1      23       FF
7   2017-03-23 06:00   017-03-23 22:00  2      23       GG

DayCode列表示从第二天的06:00到06:00开始的每一天的特殊代码。我需要做的是计算两个工厂中的任何一个工厂正在运行或者两个工厂同时运行的总时间。我现在需要总时间接收输入馈送，无论是植物还是其中任何一种植物。

在上表中，每个工厂每天可以有多个事件。

以下是2017年12月的实际数据，其中至少有一家工厂没有关闭的小时数为685.85小时，而下面的更新查询显示为528小时。为了给出更多的解释，在这种情况下，工厂14全月停工，而工厂15关闭不同时段共58.15小时，因此在本月余下时间我至少有一家工厂在运行。计算结果为31 * 24 - 58.15 = 685.85。

EventID DayCode Plant   START               FINISH

76093   4516    14  2017-12-01 06:00:00.000 2017-12-02 06:00:00.000
76098   4516    15  2017-12-01 15:30:00.000 2017-12-02 06:00:00.000
76099   4517    14  2017-12-02 06:00:00.000 2017-12-03 06:00:00.000
76101   4517    15  2017-12-02 06:00:00.000 2017-12-03 06:00:00.000
76106   4518    14  2017-12-03 06:00:00.000 2017-12-04 06:00:00.000
76127   4518    15  2017-12-03 06:00:00.000 2017-12-03 17:40:00.000
76112   4519    14  2017-12-04 06:00:00.000 2017-12-05 06:00:00.000
76117   4520    14  2017-12-05 06:00:00.000 2017-12-06 06:00:00.000
76122   4521    14  2017-12-06 06:00:00.000 2017-12-07 06:00:00.000
76128   4522    14  2017-12-07 06:00:00.000 2017-12-08 06:00:00.000
76133   4523    14  2017-12-08 06:00:00.000 2017-12-09 06:00:00.000
76138   4524    14  2017-12-09 06:00:00.000 2017-12-10 06:00:00.000
76151   4525    14  2017-12-10 06:00:00.000 2017-12-11 06:00:00.000
76155   4526    14  2017-12-11 06:00:00.000 2017-12-12 06:00:00.000
76159   4527    14  2017-12-12 06:00:00.000 2017-12-13 06:00:00.000
76163   4528    14  2017-12-13 06:00:00.000 2017-12-14 06:00:00.000
76168   4529    14  2017-12-14 06:00:00.000 2017-12-15 06:00:00.000
76172   4530    14  2017-12-15 06:00:00.000 2017-12-16 06:00:00.000
76176   4531    14  2017-12-16 06:00:00.000 2017-12-17 06:00:00.000
76180   4532    14  2017-12-17 06:00:00.000 2017-12-18 06:00:00.000
76184   4533    14  2017-12-18 06:00:00.000 2017-12-19 06:00:00.000
76188   4534    14  2017-12-19 06:00:00.000 2017-12-20 06:00:00.000
76192   4535    14  2017-12-20 06:00:00.000 2017-12-21 06:00:00.000
76196   4536    14  2017-12-21 06:00:00.000 2017-12-22 06:00:00.000
76199   4537    14  2017-12-22 06:00:00.000 2017-12-23 06:00:00.000
76202   4538    14  2017-12-23 06:00:00.000 2017-12-24 06:00:00.000
76205   4539    14  2017-12-24 06:00:00.000 2017-12-25 06:00:00.000
76207   4540    14  2017-12-25 06:00:00.000 2017-12-26 06:00:00.000
76209   4541    14  2017-12-26 06:00:00.000 2017-12-27 06:00:00.000
76211   4542    14  2017-12-27 06:00:00.000 2017-12-28 06:00:00.000
76213   4543    14  2017-12-28 06:00:00.000 2017-12-29 06:00:00.000
76215   4544    14  2017-12-29 06:00:00.000 2017-12-30 06:00:00.000
76217   4545    14  2017-12-30 06:00:00.000 2017-12-31 01:00:00.000
76221   4545    15  2017-12-30 11:58:00.000 2017-12-30 12:57:00.000
76218   4545    14  2017-12-31 01:00:00.000 2017-12-31 06:00:00.000
76223   4545    15  2017-12-31 01:30:00.000 2017-12-31 06:00:00.000
76225   4546    14  2017-12-31 06:00:00.000 2017-12-31 08:30:00.000
76230   4546    15  2017-12-31 06:00:00.000 2017-12-31 08:30:00.000
76229   4546    14  2017-12-31 08:30:00.000 2018-01-01 06:00:00.000

Answer 1

我理解你的问题的方式是你试图了解在特定月份至少有一家工厂运行了多少小时。计算总差距更容易，然后只需减去总小时数即可获得您想要的数字。请查看下面的示例是否有帮助。

编辑：添加HAVING COUNT(*) = @countOfPlants仅查看已关闭所有工厂的日期。这应该解决第一个版本的问题。如果有帮助，请告诉我。

DECLARE
    @year INT = 2017,
    @month INT = 3,
    @countOfPlants int = 2,
    @totalGapInHours INT,
    @totalUptime INT

WITH InactivePerDay (DayCode, HoursBothPlantsShutdown)
AS
(
SELECT
    DayCode,
    -- take latest Shutdown_Start and earliest Shutdown_End that day
    -- get hour difference, if it's less than 0 - we have no gap - take 0
    MAX(DATEDIFF(HOUR, MAX(Shutdown_Start), MIN(Shutdown_End)), 0) AS [HoursBothPlantsShutdown]
FROM Table1
-- filter on the month you want
WHERE DATEPART(YEAR, Shutdown_Start) = @year
AND DATEPART(MONTH, Shutdown_Start) = @month
GROUP BY DayCode
HAVING COUNT(*) = @countOfPlants
)
-- just sum up all the gaps
SELECT @totalGapInHours = SUM(HoursBothPlantsShutdown)
FROM InactivePerDay

-- assume month has 30 days and substract total gap from number of hours in a month
SET @totalUptime = 24*30 - @totalGapInHours
SELECT @totalUptime AS [Total hours at least one plant was running]

查找一个或两个工厂同时可用的总时间

1 个答案: