Question

我有一个MSSQL表，其中原始数据的格式如下：

date1                time1

2008-01-20 00:00:00   654
2008-01-20 00:00:00   659
2008-01-20 00:00:00   1759

，我需要将它们两者都合并在一起，以便查询例如过去15小时内发生的所有date_time。我所做的是

在选择语句中：

combined = CONVERT(VARCHAR(10), Date1, 103) +' ' + (left((replace((CONVERT(dec(7, 2), time1) / 100 ),'.',':')),4) + ':00') ,

这帮助我获得了

的结果

date1                time1  combined1

2008-01-20 00:00:00   654  20/01/2008 6:54:00
2008-01-20 00:00:00   659  20/01/2008 6:59:00
2008-01-20 00:00:00   1759 20/01/2008 17:5:00

我无法t change the table data & I can获得正确的语法来完全转换它（包括考虑24小时制-例如1759）

最后，我需要能够对Combined1列执行where语句，以仅查看最近15个小时内发生的行

DATEADD(hour, - 15, GETDATE())

预先感谢

Answer 1

尝试这样：

DECLARE @date DATETIME = '2008-01-20 00:00:00'
,       @Time INT = 654

SELECT DATEADD(MINUTE, @Time%100, DATEADD(HOUR, @Time/100, @date))

Answer 2

;WITH cte
AS (SELECT CAST('2008-01-20 00:00:00' AS DATETIME) AS date1,   654 AS Time1
    UNION ALL
    SELECT CAST('2008-01-20 00:00:00' AS DATETIME) AS date1,   659 AS Time1
    UNION ALL
    SELECT CAST('2008-01-20 00:00:00' AS DATETIME) AS date1,  1759 AS Time1
)

SELECT 
    DATEADD(ms, DATEDIFF(ms, '00:00:00', CAST(FORMAT(Time1, '##:##') AS TIME)),  date1) AS [CombinedDateTime]
FROM cte;

--Results to: 

CombinedDateTime
2008-01-20 06:54:00.000
2008-01-20 06:59:00.000
2008-01-20 17:59:00.000

Answer 3

尝试一下

select date1,time1, DATEADD(MINUTE, time1%100, DATEADD(HOUR, time1/100, convert(varchar(10),date1,101))) as Combined 
from Table
Where DATEADD(MINUTE, time1%100, DATEADD(HOUR, time1/100, convert(varchar(10),date1,101)))>(DATEADD(hour,-15,GETDATE()))

如何将十进制时间转换为日期时间，以便可以对其进行日期加法计算

3 个答案: