确定一个时间间隔

Question

我尝试在SSRS中创建一张图表，该图表应该只显示周日晚上10点至晚上11点的值。

我的查询：

select intervaldateweek as Week, 
     SUM(GoodUnits) As GoodUnits, 
     SUM(NetUnits) As NetUnits, 
     SUM(GoodUnits)/NULLIF(SUM(NetUnits) , 0.0)* 100 As Value 
from Count 
    inner join tsystem ON Count.systemid = tsystem.ID 
where IntervalDate >= getdate()-300 
    and tsystem.ID = 2 
group by intervaldate 

我这个表达试了一下得到的只有星期日：

(DATEPART(dw, IntervalDate) = 1 

但我不知道我怎么能确定一个特定的时间间隔。在这种情况下，晚上10点 - 晚上11点。

我需要这个时间段

的22:00:00小时之间的值23:00:00

IntervalDate >= DATEADD(HOUR, 1,CAST(DATEADD(DAY,0, CAST(GETDATE() AS DATE)) AS DATETIME)) 
    AND IntervalDate <= DATEADD(HOUR, 22, CAST(CAST(GETDATE() AS DATE) AS DATETIME)) 

我这个表情尝试过，但我想我的设置表情中的虚假麻木。

Answer 1

可以使用DATEPART功能（documentation here）来看看相关的部分，如日期时间值的小时。例如：

SELECT 
    intervaldateweek AS [Week], 
    SUM(GoodUnits) AS GoodUnits, 
    SUM(NetUnits) AS NetUnits, 
    SUM(GoodUnits)/NULLIF(SUM(NetUnits), 0.0)* 100 AS Value 
FROM 
    [Count] 
    INNER JOIN tsystem ON [Count].systemid = tsystem.ID 
WHERE 
    DATEPART(WEEKDAY,intervaldate) = 1 /* See note about SET DATEFIRST */ 
    AND DATEPART(HOUR, intervaldate) = 22 
    AND tsystem.ID = 2 
GROUP BY 
    intervaldateweek 

注意：当使用DATEPART(WEEKDAY, ...)功能，一定要知道你的服务器的配置，因为有时周日将是1和其他时间周日将是7.你可以使用例如SET DATEFIRST 1，使其强制可预测。有关详细信息，请参阅此MSDN link。

PS：您的选择语句组由intervaldate，但您的列表使用intervaldateweek这将无法正常工作。我打算假定这个小组的意图是intervaldateweek。

Answer 2

你可以使用下面的行..

DATEPART(dw,GETDATE()) = 1 AND CAST(GETDATE() AS TIME(0)) BETWEEN CAST('22:00:00' AS TIME(0)) AND CAST('23:00:00' AS TIME(0)) 

没有必要使用那种东西。

Answer 3

试试这个

select intervaldateweek as Week, 
    SUM(GoodUnits) As GoodUnits, 
    SUM(NetUnits) As NetUnits, 
    SUM(GoodUnits)/NULLIF(SUM(NetUnits) , 0.0)* 100 As Value 
from Count 
inner join tsystem ON Count.systemid = tsystem.ID 
where DATEPART(dw,intervaldate) = 1 AND CAST(intervaldate AS TIME(0)) 
BETWEEN CAST('22:00:00' AS TIME(0)) AND CAST('23:00:00' AS TIME(0)) 
and tsystem.ID = 2 
group by intervaldate