MDX表达式出错

Question

我有以下表达式MDX：

isnull([Measures].[Available Hours],0)

处理完立方体后，我在报告中遇到以下错误：

  

未找到存储过程的适当重载功能   。参数不正确.MdxScript执行托管   存储过程isnull失败，出现以下错误：Microsoft   AnalysisServices AdomdServer AdomdException

如何解决错误？

Answer 1

isnull不是mdx函数。

要在null中测试mdx，请尝试使用iif

 iif(  
  [Measures].[Available Hours] = 0,
  0,
  [Measures].[Available Hours]
 )

当我们寻找0时看起来有点奇怪，然后如果它是0则将其改为0 !!

但这是一个例子：

WITH 
  MEMBER [Measures].[Internet Sales Amount 2] AS 
    IIF
    (
      [Measures].[Internet Sales Amount] = 0
     ,0
     ,[Measures].[Internet Sales Amount]
    ) 
SELECT 
  {
    [Measures].[Internet Sales Amount]
   ,[Measures].[Internet Sales Amount 2]
  } ON 0
 ,
    [Customer].[Customer Geography].[Country].MEMBERS
  * 
    [Product].[Category].MEMBERS ON 1
FROM [Adventure Works];

这就是：

---

修改

@MarcPolizzi的替代方案做同样的事情，他的代码更紧凑：

WITH 
  MEMBER [Measures].[Internet Sales Amount 2] AS 
    IIF
    (
      [Measures].[Internet Sales Amount] = 0
     ,0
     ,[Measures].[Internet Sales Amount]
    ) 
  MEMBER [Measures].[Internet Sales Amount 3] AS 
    CoalesceEmpty
    (
      [Measures].[Internet Sales Amount]
     ,0
    ) 
SELECT 
  {
    [Measures].[Internet Sales Amount]
   ,[Measures].[Internet Sales Amount 2]
   ,[Measures].[Internet Sales Amount 3]
  } ON 0
 ,
    [Customer].[Customer Geography].[Country].MEMBERS
  * 
    [Product].[Category].MEMBERS ON 1
FROM [Adventure Works];

Answer 2

您可以使用CoalesceEmpty函数替换null / empty值。要用0值替换它们，您可以执行以下操作：

CoalesceEmpty([Measures].[Available Hours], 0)

希望有所帮助。