SQL动态日期但固定时间查询

Question

我正在尝试像下面的示例一样编写一个SQL查询，但是，我需要它始终选择当日日期为8:00 am和当日日期为4:00 pm之间的DateEntered字段。 不知道如何去做。 有人可以帮忙吗？

SELECT     OrderNumber
    , OrderRelease
    , HeatNumber
    , HeatSuffix
    , Operation
    , COUNT(Operation) AS [Pieces Out of Tolerance]
FROM         Alerts
WHERE     (Mill = 3) 
    AND (DateEntered BETWEEN GetDate '08:00' AND GetDate '16:00')
GROUP BY OrderNumber, OrderRelease, HeatNumber, HeatSuffix, Operation

Answer 1

DECLARE @TodayODBC varchar(30), @DateFrom datetime, @DateTo datetime
SET @TodayODBC = CONVERT(varchar(10), GETDATE(), 120)
SET @DateFrom = CONVERT(datetime, @TodayODBC + ' 08:00:00', 120)
SET @DateTo   = CONVERT(datetime, @TodayODBC + ' 16:00:00', 120)

SELECT OrderNumber, OrderRelease, HeatNumber, HeatSuffix, Operation,
    COUNT(Operation) AS [Pieces Out of Tolerance]
FROM Alerts
WHERE (Mill = 3) 
AND (DateEntered BETWEEN @DateFrom AND @DateTo)
GROUP BY OrderNumber, OrderRelease, HeatNumber, HeatSuffix, Operation

, 120指定ODBC日期时间格式，无论语言环境如何，该格式都是恒定的。

Answer 2

SELECT     OrderNumber
    , OrderRelease
    , HeatNumber
    , HeatSuffix
    , Operation
    , COUNT(Operation) AS [Pieces Out of Tolerance]
FROM         Alerts
WHERE     (Mill = 3) 
    AND (datediff(dd,DateEntered,getdate()) = 0 AND Datepart(hh,DateEntered) BETWEEN '08' AND '16')
GROUP BY OrderNumber, OrderRelease, HeatNumber, HeatSuffix, Operation

Answer 3

由于您使用的是SQL Server 2008，因此可以CAST作为日期或时间。 要获取08:00的当前日期，您将使用：

(CAST(CAST(getdate() AS DATE) AS DATETIME) + CAST('08:00' AS TIME)) 

要获取当前日期为16:00：

(CAST(CAST(getdate() AS DATE) AS DATETIME) + CAST('16:00' AS TIME)))

将其放入您的查询中：

SELECT OrderNumber
    , OrderRelease
    , HeatNumber
    , HeatSuffix
    , Operation
    , COUNT(Operation) AS [Pieces Out of Tolerance]
FROM         Alerts
WHERE     (Mill = 3) 
    AND (DateEntered 
        BETWEEN (CAST(CAST(getdate() AS DATE) AS DATETIME) + CAST('08:00' AS TIME)) 
        AND (CAST(CAST(getdate() AS DATE) AS DATETIME) + CAST('16:00' AS TIME)))
GROUP BY OrderNumber, OrderRelease, HeatNumber, HeatSuffix, Operation

Answer 4

SELECT     OrderNumber
    , OrderRelease
    , HeatNumber
    , HeatSuffix
    , Operation
    , COUNT(Operation) AS [Pieces Out of Tolerance]
FROM         Alerts
WHERE     (Mill = 3) 
    AND (DateEntered BETWEEN DATEADD(hour, 8, CONVERT(datetime,CONVERT(date,getdate()))) AND DATEADD(hour, 18, CONVERT(datetime,CONVERT(date,getdate()))))
GROUP BY OrderNumber, OrderRelease, HeatNumber, HeatSuffix, Operation

Answer 5

这可以为你工作

 DateEntered BETWEEN dateadd(hour, 8, cast(cast(getdate() as date) as datetime)) AND 
                     dateadd(hour, 16, cast(cast(getdate() as date) as datetime))

但这将（如您的查询一样）包括时间为16:00:00.000'行，但不包括时间为16:00:00.003' 。

如果您打算在17:00之前包括所有行，请改用此行。

 DateEntered >= dateadd(hour, 8, cast(cast(getdate() as date) as datetime)) AND
 DateEntered <  dateadd(hour, 17, cast(cast(getdate() as date) as datetime))