如何使用MDX获取SSAS中特定表的列数据类型

Question

我有一个查询，我获取所有表和列名称，但如何获取特定表的列的数据类型和长度值？

SELECT [CATALOG_NAME] as [DATABASE],
      CUBE_NAME AS [CUBE],[DIMENSION_UNIQUE_NAME] AS [DIMENSION],
      LEVEL_CAPTION AS [ATTRIBUTE],
      [LEVEL_NAME_SQL_COLUMN_NAME] AS [ATTRIBUTE_NAME_SQL_COLUMN_NAME],
      [LEVEL_KEY_SQL_COLUMN_NAME] AS [ATTRIBUTE_KEY_SQL_COLUMN_NAME]
FROM $system.MDSchema_levels
WHERE CUBE_NAME  ='Adventure Works'
AND level_origin=2
AND LEVEL_NAME <> '(All)'
order by [DIMENSION_UNIQUE_NAME]

Answer 1

你的朋友是$SYSTEM.MDSCHEMA_PROPERTIES。

查询可能有点像：

select [HIERARCHY_UNIQUE_NAME], [LEVEL_UNIQUE_NAME], DATA_TYPE 
from $SYSTEM.MDSCHEMA_PROPERTIES 
where [Dimension_Unique_Name] = '[Accident Cause]'
and [Property_Name] = 'MEMBER_VALUE'
and [CUBE_NAME] = 'Adventure Works'

要了解列DATA_TYPE中的值的含义，请参阅此msdn link。