应为MDX表达式。指定的表达式为空

Question

当我试图在我的ssrs查询构建器中构建我的mdx查询时，我得到了这个消息。有什么想法吗？错误:需要MDX表达式。指定的表达式为空。(Microsoft SQL Server2008MDX分析服务)这是我的R2

    with                                                                                        
member [Measures].[Motor: The Car]                                                                                        
as                                                                                          
( [Web Page].[Web Site Structure].[Motor Insurance].[TheCar], [Measures].[Visit Count])                                                                                     
member [Measures].[Motor: YourPolicy]                                                                                 
as                                                                                           
( [Web Page].[Web Site Structure].[Motor Insurance].[YourPolicy], [Measures].[Visit Count])                                                                                     

member [Measures].[Motor:Proposer]                                                                            
as                                                                                            
( [Web Page].[Web Site Structure].[Motor Insurance].[Proposer], [Measures].[Visit Count])                                                                                      

member [Measures].[Home:About You]                            
as        
( [Web Page].[Web Site Structure].[House Insurance].[AboutYou], [Measures].[Visit Count])    
member [Measures].[Motor:About You]            
as         
( [Web Page].[Web Site Structure].[Motor Insurance].[AboutYou], [Measures].[Visit Count])
member [Measures].[Motor:PricesPage]             
as           
( [Web Page].[Web Site Structure].[Motor Insurance].[ViewPrices], [Measures].[Visit Count])        

member [Measures].[Home:PricesPage]                   
as           
( [Web Page].[Web Site Structure].[House Insurance].[ViewPrices], [Measures].[Visit Count]) 
member [measures].[Motor:ViewAllPrices]            
as                   
( [Web Page].[Web Site Structure].[Product].&[2].[Motor:AllViewPrices], [Measures].[Visit Count]) 

member [measures].[Home:ViewAllPrices]                  
as
( [Web Page].[Web Site Structure].[House Insurance].[Home:AllViewPrices], [Measures].[Visit Count])              
member [measures].[Home:YourCover]               
as            
( [Web Page].[Web Site Structure].[House Insurance].[YourCover], [Measures].[Visit Count])
member [measures].[Home:PolicyHolder]                     
as                     
( [Web Page].[Web Site Structure].[House Insurance].[PolicyHolder], [Measures].[Visit Count])
member [measures].[Home:Property]                      
as                        
( [Web Page].[Web Site Structure].[House Insurance].[Property], [Measures].[Visit Count])

 SELECT NON EMPTY { [Measures].[Motor:PricePanel],             
 [Measures].[Motor:PricePanel->Compare],               
 [Measures].[Motor:PricePanel->MorePanel],              
 [Measures].[Home:PricePanel->MorePanel],                
 [Measures].[MorePanel->BO+Phone],              
 [Measures].[Motor:AY->PricesPage],              
 [Measures].[PercentOfVisitsByBrowser],                
  [Measures].[Proposer->PricesPage],            
  [Measures].[Proposer->TheCar],              
   [Measures].[TheCar->YourPolicy],                  
    [Measures].[PolicyHolder->Property],
     [Measures].[YourCover->PricesPage],             
     [Measures].[Property->YourCover],               
      [Measures].[YourPolicy->PricesPage],               
       [Measures].[BO+Phone],                   
        [Measures].[Compare],                   
        [Measures].[AY->Proposer],                   
        [Measures].[Motor:PricePanel->BO+Phone],              
        [Measures].[AY->PolicyHolder],                 
        [Measures].[Home:PricePanel->BO+Phone],         
        [Measures].[Home:PricePanel->Compare],           
        [Measures].[Home:PricePanel],                 
        [Measures].[Home:AY->PricesPage],                 
        [Measures].[MorePanel],                    
        [Measures].[Motor:About You]                 
,[Measures].[Motor:Proposer]                  
,[Measures].[Motor: The Car]                 
,[Measures].[Motor: YourPolicy]                 
,[Measures].[Motor:PricesPage]                 
,[measures].[Motor:ViewAllPrices]                
,[Measures].[Home:About You]                        
,[measures].[Home:PolicyHolder]                  
,[measures].[Home:Property]                    
,[measures].[Home:YourCover]                           
,[Measures].[Home:PricesPage]                      
,[measures].[Home:ViewAllPrices]                   
,[Measures].[BO+Phone] } ON COLUMNS,                     
        NON EMPTY { ([Timeline].[Financial Date].[Visit Date].ALLMEMBERS * 
        [Product].[Products By Category].[Product Category].ALLMEMBERS ) }       
         DIMENSION PROPERTIES MEMBER_CAPTION, MEMBER_UNIQUE_NAME ON ROWS         
         FROM ( SELECT ( STRTOSET(@ProductProductsByCategory, CONSTRAINED) ) ON COLUMNS          
         FROM [Visits]) CELL PROPERTIES VALUE, BACK_COLOR, FORE_COLOR, FORMATTED_VALUE, FORMAT_STRING, FONT_NAME, FONT_SIZE, FONT_FLAGS 

Answer 1

语法看起来不错，所以我猜@ProductProductsByCategory就是问题所在。

传递给此参数的字符串需要采用集合的形式，因为您使用的是StrToSet函数。我通常删除‘http://msdn.microsoft.com/en-us/library/ms144782.aspx’参数，因为它强制您列出由方括号{}括起的特定元组集合。如果删除该参数，则可以使用返回集合的MDX表达式，而不是显式指定集合

在参数的默认值中，您还需要指定一个集合。如果它只是一个成员，则使用StrToMember函数。