Question

我目前表Bugs，如下所示：

    |ID      |Priority  |Created   |Updated   |Status    |Category
    |X123    |Major     |01/01     |01/03     |Open      |A
    |X145    |Normal    |01/01     |01/02     |Closed    |B
    |X678    |Minor     |01/03     |01/03     |Open      |C
    |X763    |Major     |01/02     |01/03     |Closed    |C

所有列都是varchar（25），但Created和Updated除外，它们是日期。

我需要使用以下格式创建视图：

    |Date      |Major    |Normal    |Minor     |Category
    |01/01     |4        |3         |4         |A
    |01/01     |3        |5         |2         |B
    |01/01     |2        |4         |7         |C    
    |01/02     |7        |3         |4         |A
    |01/02     |3        |9         |5         |B
    |01/02     |1        |6         |3         |C

其中，Major，Normal和Minor下的数字是指在给定日期当前优先级错误的计数。目前已开放，我的意思是：在Created - GETDATE()区间内，已开启的错误处于有效状态，已在Created - Updated区间内处于关闭错误状态。

我通过此查询我需要的所有日期的列表：

    WITH D AS
     (
      SELECT Dates AS DateValue
      FROM DatesTable
      WHERE Dates >= '2012-03-23'
        AND Dates <= GETDATE()
     ),

关于我如何做到这一点的任何想法？我玩过一个数据透视查询和分组的想法，但我无法涵盖我需要的一切。非常感谢您的帮助！

编辑：带有示例数据的Bugs表

    CREATE TABLE [dbo].[Bugs](
            [ID] [varchar](25) NOT NULL,
            [Priority] [varchar](25) NOT NULL,
            [Updated] [date] NOT NULL,
            [Created] [date] NOT NULL,
            [Status] [varchar](25) NOT NULL,
            [Category] [varchar](25) NOT NULL,
            ) ON [PRIMARY]

    INSERT INTO Bugs VALUES (X123, Major, 01/01/12, 01/03/12, Open, A)
    INSERT INTO Bugs VALUES (X145, Normal, 01/01/12, 01/02/12, Closed, B)
    INSERT INTO Bugs VALUES (X678, Minor, 01/03/12, 01/03/12, Open, C)
    INSERT INTO Bugs VALUES (X763, Major, 01/02/12, 01/03/12, Closed, C )

Answer 1

这样的事情可能就是你想要的。

select b.Date
    , SUM(case when b.Priority = 'Major' then 1 end) as Major
    , SUM(case when b.Priority = 'Normal' then 1 end) as Normal
    , SUM(case when b.Priority = 'Minor' then 1 end) as Minor
    , b.Category
from Bugs b
group by b.Date, b.Category
order by b.Date

Answer 2

我没有使用cte，而是使用查询作为你需要的基础。通过将datestable与您的bug表连接起来，我们可以比较bug表中的日期，看看bug是否在给定日期打开。我们知道d.dates必须大于bug的创建日期。我们还需要检查错误状态。如果错误是打开的，那么我们只想将错误包括在更新日期之前。否则，由于它仍处于打开状态，因此需要将bug包括在内。其余的基本上是手动旋转数据以获得所需的值。

SELECT d.Dates, sum(case when b.priority = major then 1 else 0 end) as major,
        sum(case when b.priority = normal then 1 else 0 end) as normal,
        sum(case when b.priority = minor then 1 else 0 end) as minor,
        b.category
FROM DatesTable d
    join bugs b
    on d.dates >= b.Created 
    and case when b.status = 'closed' then b.updated else '12-31-9999' end <= d.dates
WHERE d.Dates >= '2012-03-23'
AND d.Dates <= GETDATE()
Group by d.dates,b.category

Answer 3

这是我最后测试的内容：

SELECT d.Dates as Date, 
    SUM(CASE Priority WHEN 'Major' THEN 1 ELSE 0 END) as Major, 
    SUM(CASE Priority WHEN 'Normal' THEN 1 ELSE 0 END) as Normal, 
    SUM(CASE Priority WHEN 'Minor' THEN 1 ELSE 0 END) as Minor,
    b.Category
    FROM Bugs b
INNER JOIN DatesTable d ON d.Dates >= b.Created 
WHERE (Status = 'Closed' AND d.Dates <= Updated OR Status = 'Open')
    AND d.Dates <= GETDATE() AND d.Dates >= '2012-01-01'
GROUP BY d.Dates, b.Category
ORDER BY d.Dates

Answer 4

您可以使用以下查询

SELECT DatesTable.Dates
    , SUM(CASE WHEN bugs.Priority = 'Major' THEN 1 ELSE 0 END) AS Major
    , SUM(CASE WHEN bugs.Priority = 'Normal' THEN 1 ELSE 0 END) AS Normal
    , SUM(CASE WHEN bugs.Priority = 'Minor' THEN 1 ELSE 0 END) AS Minor
    , bugs.Category
FROM DatesTable 
LEFT JOIN Bugs ON DatesTable.Dates = Bugs.Date
    -- You may need to cast this, if the data type do not match
    AND Bugs.Status='Open'

WHERE Dates >= '2012-03-23'
      AND Dates <= GETDATE()   
GROUP BY DatesTable.Dates, bugs.Category
ORDER BY DatesTable.Dates

Answer 5

我们可以使用嵌套查询来获取我们想要处理的数据，并使用父查询来显示最终结果：

 SELECT CreatedDate AS [Date],
        SUM(Major) AS Major,
        SUM(Normal) AS Normal,
        SUM(Minor) AS Minor,
        Category
   FROM (
         SELECT DATEADD(dd, DATEDIFF(dd, 0, Created), 0) AS CreatedDate,
                CASE WHEN Priority = 'Major' THEN 1 ELSE 0 END AS Major,
                CASE WHEN Priority = 'Normal' THEN 1 ELSE 0 END AS Normal,
                CASE WHEN Priority = 'Minor' THEN 1 ELSE 0 END AS Minor,
                Category
           FROM Bugs
          WHERE Status = 'Open'
        ) AS t
  GROUP BY CreatedDate, Category
  ORDER BY CreatedDate, Category

（从DATETIME删除时间的信用转到this SO question ）

嵌套查询可以更轻松地查看正在操作的数据，并根据需要过滤所述数据。

我假设日期是DATETIME，因此我删除了分组的时间部分。

请参阅此SQL Fiddle中的示例（我只为前两个条目添加了足够的数据以匹配预期结果）。

按日期和优先级对错误类型进行分组

5 个答案: