Question

我们有一个管理仪表板，需要显示每小时生产的产品数量。我的问题是我们的生产时间是半小时。例如：

DayShift Production hour #1 runs from 7:30am to 8:30am
DayShift Production hour #2 runs from 8:30am to 9:30am
DayShift Production hour #3 runs from 9:30am to 10:30am
DayShift Production hour #4 runs from 10:30am to 11:30am
DayShift Production hour #5 runs from 11:30am to 12:30pm
DayShift Production hour #6 runs from 12:30pm to 1:30pm
DayShift Production hour #7 runs from 1:30pm to 2:30pm
DayShift Production hour #8 runs from 2:30pm to 3:30pm
DayShift Production hour #9 runs from 3:30pm to 4:30pm
DayShift Production hour #10 runs from 4:30pm to 5:30pm

然后我们的夜班变得非常混乱......

Nightshift Production hour #1 runs from 8:30pm to 9:30pm
Nightshift Production hour #2 runs from 9:30pm to 10:30pm
Nightshift Production hour #3 runs from 10:30pm to 11:30pm
Nightshift Production hour #4 runs from 11:30pm to 12:30am
Nightshift Production hour #5 runs from 12:30am to 1:30am
Nightshift Production hour #6 runs from 1:30am to 2:30am
Nightshift Production hour #7 runs from 2:30am to 3:30am
Nightshift Production hour #8 runs from 3:30am to 4:30am
Nightshift Production hour #9 runs from 4:30am to 5:30am
Nightshift Production hour #10 runs from 5:30am to 6:30am

我的表格如下：

recordnbr (identity) int
PartNbr varchar(50)
crtdDateTime datetime

我的输出应如下所示：

7:30am - 50
8:30am - 49
9:30am - 53
10:30am - 55
11:30am - 48

等

感谢您的帮助！

Answer 1

创建表格hour_range

 hour_id  start    end
   1      7:30am   8:30am
   2      8:30am   9:30am
   3      9:30am   10:30am
   .....
   18     11:30pm   12:00am 
   18     12:00am   12:30am        
   .....
   25     6:30am   7:30am

然后

SELECT hour_id, count(*)
FROM myTable M
JOIN hour_range H
  ON cast(M.crtdDateTime as time) >= H.start
 AND cast(M.crtdDateTime as time) <  H.end
GROUP BY hour_id

Answer 2

只需减去30分钟并使用内置小时功能喜欢这个

<强> SQL Fiddle Demo

SELECT CAST(DATEPART(HOUR, DATEADD(mi,-30, dt)) as VARCHAR(5))+':30', count(*)
FROM dtime
GROUP BY DATEPART(HOUR, DATEADD(mi,-30, dt))

请记住，您需要限制为一天或在GROUP BY中包含DATE（crtdDateTime）

计算在半小时内按1小时增量分组的记录数

2 个答案: