Question

我在试图找出某些东西时遇到了一些困难，让我说我有一个日期和时间;

我想增加180分钟;

SELECT DATEADD(MINUTE,180,'2018-05-24 15:00')

这会给我回答“2018-05-24 18:00”，但我想在一个范围内进行，所以如果你在09:00 - 17:00之间添加分钟，那么这样的话;

SELECT DATEADD(MINUTES,180,'2018-05-24 15:00') WHERE '2018-05-24 15:00' BETWEEN '2018-05-24 09:00' AND '2018-05-24 17:00'

所以答案就是“2018-05-25 10:00”

Answer 1

然而，这并不是特别漂亮......

USE Sandbox;
GO

CREATE TABLE Times (DateNTime datetime2(0));
INSERT INTO Times
VALUES ('20180520 10:00:00'),
       ('20180520 15:20:00'),
       ('20180521 09:32:00'),
       ('20180521 14:17:00'),
       ('20180522 16:54:00'),
       ('20180523 12:46:00'),
       ('20180524 15:32:00');
GO


SELECT *
FROM Times;
GO

SELECT T.DateNTime,
       CASE WHEN CONVERT(time,T.DateNTime) <= '14:00' THEN DATEADD(MINUTE, 180,T.DateNTime)
            ELSE DATEADD(MINUTE, 180 - DATEDIFF(MINUTE,T.DateNTime,DATEADD(HOUR,17,DATEADD(DAY, DATEDIFF(DAY, 0, T.DateNTime),0))), DATEADD(HOUR,9,DATEADD(DAY, DATEDIFF(DAY, 0, T.DateNTime) + 1,0))) END
FROM Times T;

GO

DROP TABLE Times;

Answer 2

你可以试试这个：

$ ./getenv5
Hello.
Hello.
Hello.
Hello.
Hello.
Hello.
Hello.
Hello.
Hello.
Hello.
$ reps=3 msg="oh no" ./getenv5
oh no
oh no
oh no
$

Answer 3

很难，但这适用于所有情况。此解决方案适用于任何数量的（正）分钟，结果将始终在参数化小时内，并添加相应的天数。

DECLARE @RangeHourStart INT = 9
DECLARE @RangeHourEnd INT = 17

DECLARE @MinutesToAdd INT = 120

DECLARE @Date DATETIME = '2018-05-24 15:00'

SELECT
    FinalDate = CASE 
        WHEN -- When final hour exceeds the range hour
            DATEPART(HOUR, @Date) * 60 + 
            DATEPART(MINUTE, @Date) +
            @MinutesToAdd % ((@RangeHourEnd - @RangeHourStart) * 60) > @RangeHourEnd * 60 

        THEN
            DATEADD(HOUR, -1 * (@RangeHourStart - 1), 
                DATEADD(DAY, 1, 
                    DATEADD(MINUTE, @MinutesToAdd % ((@RangeHourEnd - @RangeHourStart) * 60), 
                        DATEADD(
                            DAY,
                            @MinutesToAdd / ((@RangeHourEnd - @RangeHourStart) * 60),
                            @Date)))) 

        ELSE
            DATEADD(MINUTE, @MinutesToAdd % ((@RangeHourEnd - @RangeHourStart) * 60), 
                DATEADD(
                    DAY,
                    @MinutesToAdd / ((@RangeHourEnd - @RangeHourStart) * 60),
                    @Date))
        END

我做到了，所以你不需要对任何价值进行硬编码。

范围MSSQL之间的DATEADD MINUTES

3 个答案: