MDX SUM函数和NULL值

我想为使用底层SQL Server 2008 Analysis Services数据库的Team Foundation Server 2010创建一些报告。立方体的“团队系统”是TFS 2010报告中的一个。MDX SUM函数和NULL值

我的问题是。我尝试使用FactWorkItemHistory的StateChangeCount度量。对于一段时间没有工作项状态更改，但还有其他更改。所以我们有一些具有NULL StateChangeCount的事实行，稍后会有介绍。

即使基础事实行包含空值，状态更改计数度量有时也会生成值0。此度量在[FactWorkItemHistory]。[StateChangeCount]中定义为SUM。 NULLS的SUM返回0还是我错过了某些东西？有问题的时期是2013-03-01（3月）和2013-05-02（5月）。

SELECT 
    [DateSK], 
    COUNT(*) AS COUNT, 
    SUM([StateChangeCount]) AS SUM 
FROM 
     [Tfs_Warehouse].[dbo].[FactWorkItemHistory] 
WHERE 
     [WorkItemSK] IN (SELECT [WorkItemSK] FROM [Tfs_Warehouse].[dbo].[DimWorkItem]  WHERE [System_WorkItemType] = 'Bug') 
GROUP BY 
    [DateSK]

输出为：

DateSK     COUNT SUM 
--------------------------------------- 
2011-05-05 00:00:00.000 13 7 
2012-03-01 00:00:00.000 2  NULL 
2012-09-28 00:00:00.000 60 2 
2013-05-02 00:00:00.000 16 NULL 
2013-05-06 00:00:00.000 9  9

查询：

SELECT 
    [DateSK], 
    [StateChangeCount] 
FROM 
     [Tfs_Warehouse].[dbo].[FactWorkItemHistory] 
WHERE 
     [WorkItemSK] IN (SELECT [WorkItemSK] FROM [Tfs_Warehouse].[dbo].[DimWorkItem] WHERE [System_WorkItemType] = 'Bug') 
ORDER BY 
     [DateSK]

给出：

DateSK     StateChangeCount 
--------------------------------------- 
2011-05-05 00:00:00.000 1 
2011-05-05 00:00:00.000 NULL 
2011-05-05 00:00:00.000 NULL 
2011-05-05 00:00:00.000 1 
2011-05-05 00:00:00.000 NULL 
2011-05-05 00:00:00.000 1 
2011-05-05 00:00:00.000 NULL 
2011-05-05 00:00:00.000 1 
2011-05-05 00:00:00.000 NULL 
2011-05-05 00:00:00.000 1 
2011-05-05 00:00:00.000 NULL 
2011-05-05 00:00:00.000 1 
2011-05-05 00:00:00.000 1 
2012-03-01 00:00:00.000 NULL 
2012-03-01 00:00:00.000 NULL 
2012-09-28 00:00:00.000 1 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 1 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2012-09-28 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-02 00:00:00.000 NULL 
2013-05-06 00:00:00.000 1 
2013-05-06 00:00:00.000 1 
2013-05-06 00:00:00.000 1 
2013-05-06 00:00:00.000 1 
2013-05-06 00:00:00.000 1 
2013-05-06 00:00:00.000 1 
2013-05-06 00:00:00.000 1 
2013-05-06 00:00:00.000 1 
2013-05-06 00:00:00.000 1

最后MDX查询：

SELECT 
NON EMPTY { [Measures].[State Change Count] } ON COLUMNS, 
NON EMPTY { ([Date].[Date].[Date].ALLMEMBERS * [Work Item].[System_State]. [System_State].ALLMEMBERS) } 
ON ROWS FROM (
      SELECT (
        { [Work Item].[System_WorkItemType].&[Bug] } 
         ) 
      ON COLUMNS FROM [Team System]) 
      WHERE ([Work Item].[System_WorkItemType].&[Bug])

结果：

       StateChangeCount 
--------------------------------------------- 
2011-05-05 Assigned   4 
2011-05-05 For verification 2 
2011-05-05 In progress  1 
2012-03-01 Assigned   0 
2012-09-28 Assigned   2 
2013-05-02 Assigned   0 
2013-05-06 Assigned   9

虽然

SELECT 
NON EMPTY { [Measures].[State Change Count] } ON COLUMNS, 
NON EMPTY { ([Date].[Date].[Date].ALLMEMBERS * [Work Item].[System_State]. [System_State].ALLMEMBERS) } 
ON ROWS FROM (
     SELECT (
       { [Work Item].[System_WorkItemType].&[Bug] } 
        ) 
     ON COLUMNS FROM [Team System]) 
     WHERE ([Work Item].[System_WorkItemType].&[Bug])

是：

    State Change Count 
------------------------------------ 
May 2011   7 
June 2011   (null) 
July 2011   (null) 
August 2011  (null) 
September 2011 (null) 
October 2011  (null) 
November 2011  (null) 
December 2011  (null) 
January 2012  (null) 
February 2012  (null) 
March 2012  0 
April 2012  (null) 
May 2012   (null) 
June 2012   (null) 
July 2012   (null) 
August 2012  (null) 
September 2012 2 
October 2012  (null) 
November 2012  (null) 
December 2012  (null) 
January 2013  (null) 
February 2013  (null) 
March 2013  (null) 
April 2013  (null) 
May 2013   9 
June 2013   (null) 
July 2013   (null) 
August 2013  (null) 
Unknown   (null)

我可以看到，对于有问题的时期也有一些事实行，但含有其他工作项数据变化。我希望这些项目不应该污染结果，特别是对于SUM。对于COUNT，同意，看到零值是好的，但不适用于SUM。

任何帮助将不胜感激。

谢谢

来源

2013-05-06 aguyngueran

您是否尝试过使用AGGREGATE而不是SUM？ – michele 2013-05-09 10:24:02

使用

AGGREGATE(set, measure) + 0

工作对我来说，当我遇到了同样的问题，写一个计算的成员。我还没有尝试过使用SUM。

来源

2013-10-04 03:53:33

MDX SUM函数和NULL值

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