Sql Server:每十分钟计算一次记录(包括零) [英] Sql Server: Count records (including zero) per ten-minute intervals

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问题描述

我目前有一个表 (SQL Server 2005) 来记录对我的 Web 应用程序的访问，我想将一些代码放在一起来报告(并显示可视化)该流量.我想要的是显示过去 24 小时内每十分钟间隔内的访问次数.

我有一个查询就是这样做的，但有十分钟的时间间隔没有访问，我想调整我的查询以显示这些时间间隔的零计数.我想我可以想出一些使用游标的东西，但如果可以避免的话，我宁愿不使用它们.

这是到目前为止的查询:

DECLARE @time int声明 @interval int选择@时间=96选择@间隔=10选择间隔，COUNT(*) AS requestCount,DATEDIFF(MINUTE,DATEADD(HOUR,-1*@time-1,getDate()),interval)/@interval AS intervalPos从(SELECT DATEADD(MINUTE, FLOOR(DATEDIFF(MINUTE, getDate(), requestBegin)/(@interval*1.0)) * @interval,getDate())FROM [track_pageSubmit] WHERE requestBegin IS NOT NULL AND DATEDIFF(HOUR,requestBegin,getDate()) <@time)AS I(间隔)GROUP BY 间隔 ORDER BY 间隔

表结构如下:

创建表 [dbo].[Track_PageSubmit]([id] [int] IDENTITY(1,1) 非空，[popid] [int] 非空，[节] [varchar](30) NULL，[页面] [int] NULL，[requestBegin] [datetime] NULL，[requestEnd] [datetime] NULL，[渲染] [日期时间] NULL，[postBegin] [日期时间] NULL，[postEnd] [日期时间] NULL)

这里是一些记录的样子:<代码><预>INSERT INTO track_pageSubmit (popid,section,page,requestbegin,requestend,rendered,postbegin,postend)SELECT '2393712','Main_Can_Eng','10','2010-01-22 10:22:08.287','2010-01-22 10:22:08.330',NULL,'2010-01-22 10:22:09.503','2010-01-22 10:22:09.627' 联合SELECT '2393712','Main_Can_Eng','11','2010-01-22 10:22:09.660','2010-01-22 10:22:09.770',NULL,'2010-01-22 10:22:10.973','2010-01-22 10:22:11.050' 联合SELECT '2393712','Main_Can_Eng','12','2010-01-22 10:22:11.080','2010-01-22 10:22:11.143',NULL,'2010-01-22 10:22:12.503','2010-01-22 10:22:12.567' 联合选择 '2394478','main','21','2010-01-21 10:38:54.057','2010-01-21 10:38:54.117','2010-01-21 10:38:54.487','2010-01-21 10:38:55.633','2010-01-21 10:38:55.697' 联合选择 '2394478','main','22','2010-01-21 10:38:55.757','2010-01-21 10:38:55.820','2010-01-21 10:38:56.197','2010-01-21 10:38:57.477','2010-01-21 10:38:57.570' 联合选择 '2394478','main','23','2010-01-21 10:38:57.617','2010-01-21 10:38:57.993','2010-01-21 10:38:58.367','2010-01-21 10:38:59.397','2010-01-21 10:38:59.493' 联合选择 '2394478','main','25','2010-01-21 10:38:59.553','2010-01-21 10:38:59.617','2010-01-21 10:38:59.93','2010-01-21 10:39:01.227','2010-01-21 10:39:01.303' 联合选择 '2394478','main','26','2010-01-21 10:39:01.350','2010-01-21 10:39:01.477','2010-01-21 10:39:01.860','2010-01-21 10:39:02.787','2010-01-21 10:39:02.867' 联合选择 '2394478','main','27','2010-01-21 10:39:02.930','2010-01-21 10:39:03.007','2010-01-21 10:39:03.400','2010-01-21 10:39:04.147','2010-01-21 10:39:04.460' 联合选择 '2394478','main','28','2010-01-21 10:39:04.507','2010-01-21 10:39:05.147','2010-01-21 10:39:05.790','2010-01-21 10:39:19.413','2010-01-21 10:39:19.477' 联合SELECT '2393754','exp46_cex','1','2010-01-22 12:40:56.563','2010-01-22 12:40:56.640',NULL,'2010-01-22 12:40:58.657','2010-01-22 12:40:58.733' 联合SELECT '2393754','exp46_cex','2','2010-01-22 12:40:58.750','2010-01-22 12:40:58.780',NULL,'2010-01-22 12:41:15.623','2010-01-22 12:41:15.657' 联合SELECT '2393754','additionalComments','1','2010-01-22 12:41:15.670','2010-01-22 12:41:15.733',NULL,'2010-01-22 12:41:19.000','2010-01-22 12:41:19.030' 联合SELECT '2393802','main','2','2010-01-22 12:44:50.857','2010-01-22 12:44:50.933',NULL,'2010-01-22 12:44:53.497','2010-01-22 12:44:53.557' 联合SELECT '2393802','main','3','2010-01-22 12:44:53.590','2010-01-22 12:44:53.667',NULL,'2010-01-22 12:44:56.370','2010-01-22 12:44:56.730'

奖励积分(以我的额外感谢的形式)给任何可以更改查询的人，以便我还可以报告每个时间间隔的不同 popid(除了总请求数).

谢谢！

解决方案

-- 因为您的样本数据跨越 27 小时:

DECLARE@hours TINYINT，@minute_interval TINYINT，@开始小日期时间；选择@小时 = 27,@minute_interval = 10,@start = '20100122 13:00';;与 x AS(选择顶部 (@hours * (60/@minute_interval))n = ROW_NUMBER() 结束(按 column_id 排序)从 msdb.sys.columns),间隔(边界)AS(选择转换(小日期时间，DATEADD(分钟，(-n * @minute_interval)，@start))发件人)选择i.边界，RequestCount = COUNT(d.id),DistinctPopIDs = COUNT(DISTINCT d.popid)从间隔 AS i左外连接dbo.Track_PageSubmit AS dON d.requestBegin >= i.boundaryAND d.requestBegin <DATEADD(分钟，@minute_interval，i.boundary)GROUP BY i.boundary按 i.boundary 排序；

I currently have a table (SQL Server 2005) that logs the visits against my web app, and I want to put together some code to report (and display a visualization) of that traffic. What I want is to display the number of visits during each ten-minute interval over the last 24 hours.

I have a query that does just that, but there are ten-minute intervals during which there are no visits, and I would like to adjust my query to display a zero count for those intervals. I imagine I could come up with something using cursors, but I'd rather not use them if I can avoid it.

Here is the query so far:

DECLARE @time int
DECLARE @interval int
SELECT @time=96
SELECT @interval=10
SELECT interval,
COUNT(*) AS requestCount,
DATEDIFF(MINUTE,DATEADD(HOUR,-1*@time-1,getDate()),interval)/@interval AS intervalPos
FROM 
(SELECT DATEADD(MINUTE, FLOOR(DATEDIFF(MINUTE, getDate(), requestBegin) / (@interval*1.0)) * @interval,getDate())
FROM [track_pageSubmit] WHERE requestBegin IS NOT NULL AND DATEDIFF(HOUR,requestBegin,getDate()) < @time) AS I(interval) 
GROUP BY interval ORDER BY interval

Here is the table structure:

CREATE TABLE [dbo].[Track_PageSubmit](
    [id] [int] IDENTITY(1,1) NOT NULL,
    [popid] [int] NOT NULL,
    [section] [varchar](30) NULL,
    [page] [int] NULL,
    [requestBegin] [datetime] NULL,
    [requestEnd] [datetime] NULL,
    [rendered] [datetime] NULL,
    [postBegin] [datetime] NULL,
    [postEnd] [datetime] NULL
)

And here is what some of the records look like: 

INSERT INTO track_pageSubmit (popid,section,page,requestbegin,requestend,rendered,postbegin,postend)
SELECT '2393712','Main_Can_Eng','10','2010-01-22 10:22:08.287','2010-01-22 10:22:08.330',NULL,'2010-01-22 10:22:09.503','2010-01-22 10:22:09.627' UNION
SELECT '2393712','Main_Can_Eng','11','2010-01-22 10:22:09.660','2010-01-22 10:22:09.770',NULL,'2010-01-22 10:22:10.973','2010-01-22 10:22:11.050' UNION
SELECT '2393712','Main_Can_Eng','12','2010-01-22 10:22:11.080','2010-01-22 10:22:11.143',NULL,'2010-01-22 10:22:12.503','2010-01-22 10:22:12.567' UNION
SELECT '2394478','main','21','2010-01-21 10:38:54.057','2010-01-21 10:38:54.117','2010-01-21 10:38:54.487','2010-01-21 10:38:55.633','2010-01-21 10:38:55.697' UNION
SELECT '2394478','main','22','2010-01-21 10:38:55.757','2010-01-21 10:38:55.820','2010-01-21 10:38:56.197','2010-01-21 10:38:57.477','2010-01-21 10:38:57.570' UNION
SELECT '2394478','main','23','2010-01-21 10:38:57.617','2010-01-21 10:38:57.993','2010-01-21 10:38:58.367','2010-01-21 10:38:59.397','2010-01-21 10:38:59.493' UNION
SELECT '2394478','main','25','2010-01-21 10:38:59.553','2010-01-21 10:38:59.617','2010-01-21 10:38:59.993','2010-01-21 10:39:01.227','2010-01-21 10:39:01.303' UNION
SELECT '2394478','main','26','2010-01-21 10:39:01.350','2010-01-21 10:39:01.477','2010-01-21 10:39:01.860','2010-01-21 10:39:02.787','2010-01-21 10:39:02.867' UNION
SELECT '2394478','main','27','2010-01-21 10:39:02.930','2010-01-21 10:39:03.007','2010-01-21 10:39:03.400','2010-01-21 10:39:04.147','2010-01-21 10:39:04.460' UNION
SELECT '2394478','main','28','2010-01-21 10:39:04.507','2010-01-21 10:39:05.147','2010-01-21 10:39:05.790','2010-01-21 10:39:19.413','2010-01-21 10:39:19.477' UNION
SELECT '2393754','exp46_cex','1','2010-01-22 12:40:56.563','2010-01-22 12:40:56.640',NULL,'2010-01-22 12:40:58.657','2010-01-22 12:40:58.733' UNION
SELECT '2393754','exp46_cex','2','2010-01-22 12:40:58.750','2010-01-22 12:40:58.780',NULL,'2010-01-22 12:41:15.623','2010-01-22 12:41:15.657' UNION
SELECT '2393754','additionalComments','1','2010-01-22 12:41:15.670','2010-01-22 12:41:15.733',NULL,'2010-01-22 12:41:19.000','2010-01-22 12:41:19.030' UNION
SELECT '2393802','main','2','2010-01-22 12:44:50.857','2010-01-22 12:44:50.933',NULL,'2010-01-22 12:44:53.497','2010-01-22 12:44:53.557' UNION
SELECT '2393802','main','3','2010-01-22 12:44:53.590','2010-01-22 12:44:53.667',NULL,'2010-01-22 12:44:56.370','2010-01-22 12:44:56.730'

Bonus points (in the form of extra thanks from me) to anyone who can change the query so that I can also report distinct popids per interval (in addition to total requests).

Thanks!

解决方案

-- Because your sample data spans 27 hours:

DECLARE
    @hours TINYINT,
    @minute_interval TINYINT,
    @start SMALLDATETIME;

SELECT
    @hours = 27,
    @minute_interval = 10,
    @start = '20100122 13:00';

;WITH x AS 
(
    SELECT TOP (@hours * (60 / @minute_interval))
        n = ROW_NUMBER() OVER
        (ORDER BY column_id)
    FROM msdb.sys.columns
),
intervals(boundary) AS
(
    SELECT CONVERT
    (
      SMALLDATETIME,
      DATEADD(MINUTE, (-n * @minute_interval), @start)
    )
    FROM x
)
SELECT
    i.boundary,
    RequestCount = COUNT(d.id),
    DistinctPopIDs = COUNT(DISTINCT d.popid)
FROM
    intervals AS i
LEFT OUTER JOIN
    dbo.Track_PageSubmit AS d
    ON d.requestBegin >= i.boundary
    AND d.requestBegin < DATEADD(MINUTE, @minute_interval, i.boundary)
GROUP BY i.boundary
ORDER BY i.boundary;

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