sql - 在 MDX 查询上添加过滤器

Question

SELECT  
  {[Measures].[Imports - Tons]
   , [Measures].[Imports - Metric Tonnes]
   , [Measures].[Import Customs Value]  } ON COLUMNS,  
{CROSSJOIN (
   [Date].[Month Year].members
  ,[Country].[Country Name].members
  ,[Steel Mill Product].[Steel Mill Product Name].[Plates-Cut Length]
  ,[Concordance].[HTS 10 Digit Code].members) }
ON ROWS  
FROM [AISISteel]   
WHERE ([Date].[Year].[2014], [Concordance].[HTS 2 Digit Code].[72])

我有这个 MDX 查询。
我想取回所有这些数据，但只取回 Import-Tons>0 的数据。我该怎么做？

Answer 1

您可以尝试使用FILTER功能:

SELECT  
  {[Measures].[Imports - Tons]
   , [Measures].[Imports - Metric Tonnes]
   , [Measures].[Import Customs Value]  } ON COLUMNS,  
FILTER(
  {CROSSJOIN (
     [Date].[Month Year].members
    ,[Country].[Country Name].members
    ,[Steel Mill Product].[Steel Mill Product Name].[Plates-Cut Length]
    ,[Concordance].[HTS 10 Digit Code].members) }
  , [Measures].[Imports - Tons] > 0
  )
ON ROWS  
FROM [AISISteel]   
WHERE ([Date].[Year].[2014], [Concordance].[HTS 2 Digit Code].[72])

此外，很少使用的 HAVING 子句也是您的一个可能选择

SELECT  
  {[Measures].[Imports - Tons]
   , [Measures].[Imports - Metric Tonnes]
   , [Measures].[Import Customs Value]  } 
ON COLUMNS,  
  {CROSSJOIN (
     [Date].[Month Year].members
    ,[Country].[Country Name].members
    ,[Steel Mill Product].[Steel Mill Product Name].[Plates-Cut Length]
    ,[Concordance].[HTS 10 Digit Code].members) }
HAVING [Measures].[Imports - Tons] > 0
ON ROWS  
FROM [AISISteel]   
WHERE ([Date].[Year].[2014], [Concordance].[HTS 2 Digit Code].[72])

另外，为了简洁起见，还有一个几乎总是首选的 CROSSJOIN 函数的快捷方式:

SELECT  
  {[Measures].[Imports - Tons]
   , [Measures].[Imports - Metric Tonnes]
   , [Measures].[Import Customs Value]  } 
ON COLUMNS,  
    {[Date].[Month Year].members*
     [Country].[Country Name].members*
     [Steel Mill Product].[Steel Mill Product Name].[Plates-Cut Length]*
     [Concordance].[HTS 10 Digit Code].members}
HAVING [Measures].[Imports - Tons] > 0
ON ROWS  
FROM [AISISteel]   
WHERE ([Date].[Year].[2014], [Concordance].[HTS 2 Digit Code].[72])

---

编辑

如果将上面的内容与下面的内容进行比较，执行时间是否有很大不同？

SELECT  
  {[Measures].[Imports - Tons]
   , [Measures].[Imports - Metric Tonnes]
   , [Measures].[Import Customs Value]  } ON COLUMNS,  
  FILTER(
    NONEMPTY(
     [Date].[Month Year].members*
     [Country].[Country Name].members*
     [Steel Mill Product].[Steel Mill Product Name].[Plates-Cut Length]*
     [Concordance].[HTS 10 Digit Code].members
    ,[Measures].[Imports - Tons]
    )
  ,[Measures].[Imports - Tons] > 0
  )
ON ROWS  
FROM [AISISteel]   
WHERE ([Date].[Year].[2014], [Concordance].[HTS 2 Digit Code].[72])