计算按日期和小时分组的行数 [英] Counting number of rows grouped by date and hour

问题描述

  DoorID DateTimeStamp EntryType 
 1 2013-09-02 09：01：16.000 IN 
 1 2013-09-02 09：04：09.000 IN 
 1 2013-09-02 10：19：29.000 IN 
 1 2013-09-02 10：19：30.000 IN 
 1 2013-09-02 10：19：32.000 OUT 
 1 2013-09-02 10：26：36.000 IN 
 1 2013-09-02 10：26：40.000 OUT 
  

我不想将 OUT 行，只是 IN 。

我相信它需要按照日期和 DoorID 分组，然后获得小时总数。

$

 日期DoorID HourOfDay TotalInPersons 
 2013-b $ b 
我希望它能像这样出来。
 09-02 1 0 0 
 2013-09-02 1 1 0 
 2013-09-02 1 2 0 
 2013-09-02 1 3 0 
 2013-09-02 1 4 0 
 2013-09-02 1 5 0 
 2013-09-02 1 6 0 
 2013-09-02 1 7 0 
 2013-09-02 1 8 0 
 2013-09-02 1 9 2 
 2013-09-02 1 10 3 
 2013-09-02 1 11 0 
 2013-09-02 1 12 0 
 2013-09-02 1 13 0 
 2013-09-02 1 14 0 
 2013-09-02 1 15 0 
 2013-09-02 1 16 0 
 2013-09-02 1 17 0 
 2013-09-02 1 18 0 
 2013- 09-02 1 19 0 
 2013-09-02 1 20 0 
 2013-09-02 1 21 0 
 2013-09-02 1 22 0 
 2013-09- 02 1 23 0 
  

解决方案

  SELECT 
 [Date] = CONVERT（DATE，DateTimeStamp），
 DoorID，
 HourOfDay = DATEPART（HOUR，DateTimeStamp），
 Tota lInPersons = COUNT（*）
 FROM dbo.tablename 
 WHERE EntryType ='IN'
 GROUP BY 
 CONVERT（DATE，DateTimeStamp），
 DoorID，
 DATEPART（HOUR，DateTimeStamp）
 ORDER BY 
 [Date]，DoorID，HourOfDay; 
  

当然，如果你需要所有的时间，即使没有行代表，这里有一个解决方案将任何一天的输出限制为当天至少有一个 IN 条目的门）：

; WITH h AS 
（
 SELECT TOP（24）h =数字FROM Master..spt_values 
 WHERE type = N'P'ORDER BY number 
 
 
 
 
 
 
 
 
 
 
 
 
 
 $ 
 $ b SELECT 
 d。[Date]，
 d.DoorID，
 HourOfDay = hh，
 TotalInPersons = COUNT（t.EntryType）
 FROM doors AS d CROSS JOIN h 
 LEFT OUTER JOIN dbo.tablename AS t 
 ON CONVERT（DATE，t.DateTimeStamp）= d。[Date] 
 AND t.DoorID = d.DoorID 
 AND DATEPART（HOUR，t.DateTimeStamp）= hh 
 AND t.EntryType ='IN'
 GROUP BY d。[Date]，d.DoorID，hh 
 ORDER BY d。[日期]，d.DoorID，hh; 
  

I am tracking customer store entry data in Microsoft SQL Server 2008 R2 that looks something like this:

DoorID        DateTimeStamp               EntryType
1             2013-09-02 09:01:16.000     IN
1             2013-09-02 09:04:09.000     IN
1             2013-09-02 10:19:29.000     IN
1             2013-09-02 10:19:30.000     IN
1             2013-09-02 10:19:32.000     OUT
1             2013-09-02 10:26:36.000     IN
1             2013-09-02 10:26:40.000     OUT

I don't want to count the OUT rows, just IN.

I believe that it needs to be grouped on Date, and DoorID, then get the hours totals.

I would like it to come out like this.

Date        DoorID  HourOfDay TotalInPersons
2013-09-02  1       0         0
2013-09-02  1       1         0
2013-09-02  1       2         0
2013-09-02  1       3         0
2013-09-02  1       4         0
2013-09-02  1       5         0
2013-09-02  1       6         0
2013-09-02  1       7         0
2013-09-02  1       8         0
2013-09-02  1       9         2
2013-09-02  1       10        3
2013-09-02  1       11        0
2013-09-02  1       12        0
2013-09-02  1       13        0
2013-09-02  1       14        0
2013-09-02  1       15        0
2013-09-02  1       16        0
2013-09-02  1       17        0
2013-09-02  1       18        0
2013-09-02  1       19        0
2013-09-02  1       20        0
2013-09-02  1       21        0
2013-09-02  1       22        0
2013-09-02  1       23        0

解决方案

SELECT 
  [Date] = CONVERT(DATE, DateTimeStamp), 
  DoorID,
  HourOfDay = DATEPART(HOUR, DateTimeStamp),
  TotalInPersons = COUNT(*)
FROM dbo.tablename
WHERE EntryType = 'IN'
GROUP BY 
  CONVERT(DATE, DateTimeStamp),
  DoorID,
  DATEPART(HOUR, DateTimeStamp)
ORDER BY
  [Date], DoorID, HourOfDay;

Of course if you need all hours, even where no rows are represented, here is one solution (which limits the output for any day only to the doors that have at least one IN entry on that day):

;WITH h AS 
(
  SELECT TOP (24) h = number FROM Master..spt_values 
  WHERE type = N'P' ORDER BY number
),
doors AS
(
  SELECT DISTINCT DoorID, [Date] = CONVERT(DATE,DateTimeStamp) 
  FROM dbo.tablename WHERE EntryType = 'IN'
)
SELECT 
  d.[Date],
  d.DoorID,
  HourOfDay = h.h,
  TotalInPersons = COUNT(t.EntryType) 
FROM doors AS d CROSS JOIN h
LEFT OUTER JOIN dbo.tablename AS t
ON CONVERT(DATE, t.DateTimeStamp) = d.[Date]
AND t.DoorID = d.DoorID
AND DATEPART(HOUR, t.DateTimeStamp) = h.h
AND t.EntryType = 'IN'
GROUP BY d.[Date], d.DoorID, h.h
ORDER BY d.[Date], d.DoorID, h.h;

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