使用 Tuple 函數
Tuple 函數可以擷取集合的 Tuple，或是解析 Tuple 的字串表示法來擷取 Tuple。
Tuple 函數跟成員函數和集合函數一樣，對於交涉 Analysis Services 中找到的多維度結構而言不可或缺。
MDX 中有三個 Tuple 函數：Current (MDX)、Item (Tuple) (MDX) 和 StrToTuple (MDX)。下列範例查詢會示範如何使用每一個函數：
WITH
//Creates a set of tuples consisting of Years and Countries
SET MyTuples AS [Date].[Calendar Year].[Calendar Year].MEMBERS * [Customer].[Country].[Country].MEMBERS
//Returns a string representation of that set using the Current and Generate functions
MEMBER MEASURES.CURRENTDEMO AS GENERATE(MyTuples, TUPLETOSTR(MyTuples.CURRENT), ", ")
//Retrieves the fourth tuple from that set and displays it as a string
MEMBER MEASURES.ITEMDEMO AS TUPLETOSTR(MyTuples.ITEM(3))
//Creates a tuple consisting of the measure Internet Sales Amount and the country Australia from a string
MEMBER MEASURES.STRTOTUPLEDEMO AS STRTOTUPLE("([Measures].[Internet Sales Amount]" + ", [Customer].[Country].&[Australia])")
SELECT{MEASURES.CURRENTDEMO,MEASURES.ITEMDEMO,MEASURES.STRTOTUPLEDEMO} ON COLUMNS
FROM [Adventure Works]