设置另一个营业时间，而不是实际时间

Question

我有一个日期时间维度，日期如下：

Datetime                      Date hour
--------------------------------------
2026-01-01 00:00:00.0000000       24
2025-12-31 23:00:00.0000000       23
2025-12-31 22:00:00.0000000       22
2025-12-31 21:00:00.0000000       21
2025-12-31 20:00:00.0000000       20
2025-12-31 19:00:00.0000000       19
2025-12-31 18:00:00.0000000       18
2025-12-31 17:00:00.0000000       17
2025-12-31 16:00:00.0000000       16
2025-12-31 15:00:00.0000000       15
2025-12-31 14:00:00.0000000       14
2025-12-31 13:00:00.0000000       13
2025-12-31 12:00:00.0000000       12
2025-12-31 11:00:00.0000000       11
2025-12-31 10:00:00.0000000       10
2025-12-31 09:00:00.0000000       9
2025-12-31 08:00:00.0000000       8
2025-12-31 07:00:00.0000000       7
2025-12-31 06:00:00.0000000       6
2025-12-31 05:00:00.0000000       5
2025-12-31 04:00:00.0000000       4
2025-12-31 03:00:00.0000000       3
2025-12-31 02:00:00.0000000       2
2025-12-31 01:00:00.0000000       1

由于系统时间的原因，我需要将我的工作时间从 6 点开始，但我该怎么做？我可以创建一个带有硬编码值的 temptable 并加入，但必须有更简单的方法吗？

想要的结果：

Datetime                      Date hour
--------------------------------------
2026-01-01 00:00:00.0000000       19
2025-12-31 23:00:00.0000000       18
2025-12-31 22:00:00.0000000       17
2025-12-31 21:00:00.0000000       16
2025-12-31 20:00:00.0000000       15
2025-12-31 19:00:00.0000000       14
2025-12-31 18:00:00.0000000       13
2025-12-31 17:00:00.0000000       12
2025-12-31 16:00:00.0000000       11
2025-12-31 15:00:00.0000000       10
2025-12-31 14:00:00.0000000       9
2025-12-31 13:00:00.0000000       8
2025-12-31 12:00:00.0000000       7
2025-12-31 11:00:00.0000000       6
2025-12-31 10:00:00.0000000       5
2025-12-31 09:00:00.0000000       4
2025-12-31 08:00:00.0000000       3
2025-12-31 07:00:00.0000000       2
2025-12-31 06:00:00.0000000       1
2025-12-31 05:00:00.0000000       24
2025-12-31 04:00:00.0000000       23
2025-12-31 03:00:00.0000000       22
2025-12-31 02:00:00.0000000       21
2025-12-31 01:00:00.0000000       20

And for any questions about why I dont hold a DateDimension and a TimeDimension. This cannot forefill my requirements since I have many more business rules on my datetime dimensions

Answer 1

鉴于您的 [Date hour] 列已经计算完毕，您可以尝试使用模数进行更新：

UPDATE yourTable
SET [Date hour] = 1 + ([Date hour] + 18) % 24;

Demo

更好的长期解决方案可能是根据原始日期时间信息将日期小时列设为计算列。请参阅@Larnu 的答案以了解执行此操作的一种方法。

Answer 2

猜测...

UPDATE YourTable
SET [Date hour] = IIF(DATEPART(HOUR,DATEADD(HOUR, -5, [datetime])) = 0,24,DATEPART(HOUR,DATEADD(HOUR, -5, [datetime]));

设置另一个营业时间，而不是实际时间

Set another Business hour than the time really is

sql-server

datetime

date

sql-server-2017

Demo