需要输出基于基于TimeDifference的计数或权重

时间：2011-08-18 01:54:16

标签： sql sql-server sql-server-2005 tsql sql-server-2008 

TID   StartTime                   Uid   WId
1     2011-06-06 09:30:00.000     10    1.5
2     2011-06-06 09:40:00.000     10    3.5
3     2011-06-06 09:50:00.000     10    1.0
4     2011-06-06 10:45:00.000     10    2.5
5     2011-06-06 10:50:00.000     10    1.5
6     2011-06-06 10:55:00.000     10    0
7     2011-06-06 11:30:00.000     10    0
8     2011-06-06 11:35:00.000     10    0
9     2011-06-06 11:40:00.000     10    0
10    2011-06-06 11:43:00.000     10    0
11    2011-06-06 11:20:00.000     11    7.0
12    2011-06-06 11:30:00.000     11    1.0

我有表TblTask​​中的数据，我需要根据每个Starttime的时间差和另一个时间差为1小时或接近1小时的启动时间来编写查询来计算（sum（Wid）或Count（TID））由UID分组。

例如取第一个开始时间（2011-06-06 09：30：00.000）;具有＆lt; = 1hr的最近开始时间是（2011-06-06 10：30：00.000）（如果SUM（Wid）> = 5.0或行数> = 5）。这里的权重是（1.5 + 3.5 + 1.0 = 6.0）  前3行TID（1,2,3）作为权重＆gt; = 5我们需要显示记录和  TID（3,4,5）这里的重量是（1.0 + 2.5 + 1.5 = 5.0）  对于TID'd（4,5,6,7,8,9,10）这里计数（TID是7）所以我想显示4到10的所有记录

对于TID（5,6,7,8,9,10）作为Count（TID是> 5）我想显示5到10的所有记录

对于TID（6,7,8,9,10）作为Count（TID是= 5）我希望显示从6到10的所有记录

对于TID 11，WID＆gt; 5我想显示记录11

对于TID（11,12），WID> 5再次，我想显示记录11和12

所需的输出将是：

TID    StartTime                 Uid  
1     2011-06-06 09:30:00.000    10    
2     2011-06-06 09:40:00.000    10     
3     2011-06-06 09:50:00.000    10   
3     2011-06-06 09:50:00.000    10    
4     2011-06-06 10:45:00.000    10    
5     2011-06-06 10:50:00.000    10    
4     2011-06-06 10:45:00.000    10    
5     2011-06-06 10:50:00.000    10    
6     2011-06-06 10:55:00.000    10    
7     2011-06-06 11:30:00.000    10    
8     2011-06-06 11:35:00.000    10    
9     2011-06-06 11:40:00.000    10    
10    2011-06-06 11:43:00.000    10    
5     2011-06-06 10:50:00.000    10    
6     2011-06-06 10:55:00.000    10    
7     2011-06-06 11:30:00.000    10    
8     2011-06-06 11:35:00.000    10    
9     2011-06-06 11:40:00.000    10    
10    2011-06-06 11:43:00.000    10    
6     2011-06-06 10:55:00.000    10    
7     2011-06-06 11:30:00.000    10    
8     2011-06-06 11:35:00.000    10    
9     2011-06-06 11:40:00.000    10    
10    2011-06-06 11:43:00.000    10    
11    2011-06-06 11:20:00.000    11 
11    2011-06-06 11:20:00.000    11    
12    2011-06-06 11:30:00.000    11

1 个答案:

答案 0 :(得分：0)

备选方案I：不会捕获单行11，因为它将尝试从每个起始点选择最长的有效序列。

SELECT C.*
FROM (
    SELECT
        A.UID,
        A.TID AS TID1,
        MAX(B.TID) AS TID2
    FROM TblTask A
    INNER JOIN TblTask B
        ON B.UID = A.UID
        AND B.StartTime BETWEEN A.StartTime AND DATEADD(hour, 1, A.StartTime)
    GROUP BY A.TID, A.UID
    HAVING SUM(B.WId) >= 5 OR COUNT(*) >= 5
) Ranges
INNER JOIN TblTask C
    ON C.UID = Ranges.UID
    AND C.TID BETWEEN Ranges.TID1 AND Ranges.TID2

备选方案II：将同时报告（4..9）和（4..10），因为这些都符合标准。

SELECT D.*
FROM (
    SELECT
        A.Uid,
        A.TID AS TID1,
        B.TID AS TID2
    FROM TblTask A
    INNER JOIN TblTask B
        ON B.Uid = A.Uid
        AND B.StartTime BETWEEN A.StartTime AND DATEADD(hour, 1, A.StartTime)
    INNER JOIN TblTask C
        ON C.UID = A.UID
        AND C.TID BETWEEN A.TID AND B.TID
    GROUP BY A.TID, B.TID, A.Uid
    HAVING SUM(C.WId) >= 5  OR COUNT(*) >= 5
) Ranges
INNER JOIN TblTask D
    ON D.Uid = Ranges.Uid
    AND D.TID BETWEEN Ranges.TID1 AND Ranges.TID2;

在任何一种方法中，您都可以添加Ranges表中的列来区分连接的子序列。

备选方案I的结果：

TID   StartTime                 Uid   WId
  1   2011-06-06 09:30:00.000    10   1.5
  2   2011-06-06 09:40:00.000    10   3.5
  3   2011-06-06 09:50:00.000    10   1.0
  3   2011-06-06 09:50:00.000    10   1.0
  4   2011-06-06 10:45:00.000    10   2.5
  5   2011-06-06 10:50:00.000    10   1.5
  4   2011-06-06 10:45:00.000    10   2.5
  5   2011-06-06 10:50:00.000    10   1.5
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  9   2011-06-06 11:40:00.000    10   0.0
 10   2011-06-06 11:43:00.000    10   0.0
  5   2011-06-06 10:50:00.000    10   1.5
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  9   2011-06-06 11:40:00.000    10   0.0
 10   2011-06-06 11:43:00.000    10   0.0
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  9   2011-06-06 11:40:00.000    10   0.0
 10   2011-06-06 11:43:00.000    10   0.0
 11   2011-06-06 11:20:00.000    11   7.0
 12   2011-06-06 11:30:00.000    11   1.0

备选方案II的结果：

TID   StartTime                 Uid   WId
  1   2011-06-06 09:30:00.000    10   1.5
  2   2011-06-06 09:40:00.000    10   3.5
  1   2011-06-06 09:30:00.000    10   1.5
  2   2011-06-06 09:40:00.000    10   3.5
  3   2011-06-06 09:50:00.000    10   1.0
  3   2011-06-06 09:50:00.000    10   1.0
  4   2011-06-06 10:45:00.000    10   2.5
  5   2011-06-06 10:50:00.000    10   1.5
  4   2011-06-06 10:45:00.000    10   2.5
  5   2011-06-06 10:50:00.000    10   1.5
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  4   2011-06-06 10:45:00.000    10   2.5
  5   2011-06-06 10:50:00.000    10   1.5
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  9   2011-06-06 11:40:00.000    10   0.0
  4   2011-06-06 10:45:00.000    10   2.5
  5   2011-06-06 10:50:00.000    10   1.5
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  9   2011-06-06 11:40:00.000    10   0.0
 10   2011-06-06 11:43:00.000    10   0.0
  5   2011-06-06 10:50:00.000    10   1.5
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  9   2011-06-06 11:40:00.000    10   0.0
  5   2011-06-06 10:50:00.000    10   1.5
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  9   2011-06-06 11:40:00.000    10   0.0
 10   2011-06-06 11:43:00.000    10   0.0
  6   2011-06-06 10:55:00.000    10   0.0
  7   2011-06-06 11:30:00.000    10   0.0
  8   2011-06-06 11:35:00.000    10   0.0
  9   2011-06-06 11:40:00.000    10   0.0
 10   2011-06-06 11:43:00.000    10   0.0
 11   2011-06-06 11:20:00.000    11   7.0
 11   2011-06-06 11:20:00.000    11   7.0
 12   2011-06-06 11:30:00.000    11   1.0
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