DistinctCount (MDX)
返回集中非重复的非空元组的数目。
语法
DistinctCount(Set_Expression)
参数
- Set_Expression
返回集的有效多维表达式 (MDX)。
注释
DistinctCount 函数等效于 Count(Distinct(Set_Expression), EXCLUDEEMPTY)。
示例
以下查询说明如何使用 DistinctCount 函数：
WITH SET MySet AS
{[Customer].[Customer Geography].[Country].&[Australia],[Customer].[Customer Geography].[Country].&[Australia],
[Customer].[Customer Geography].[Country].&[Canada],[Customer].[Customer Geography].[Country].&[France],
[Customer].[Customer Geography].[Country].&[United Kingdom],[Customer].[Customer Geography].[Country].&[United Kingdom]}
*
{([Date].[Calendar].[Date].&[20010701],[Measures].[Internet Sales Amount] )}
//Returns the value 3 because Internet Sales Amount is null
//for the UK on the date specified
MEMBER MEASURES.SETDISTINCTCOUNT AS
DISTINCTCOUNT(MySet)
SELECT {MEASURES.SETDISTINCTCOUNT} ON 0
FROM [Adventure Works]