is-mdx.md

title	description	author	ms.author	ms.reviewer	ms.date	ms.service	ms.subservice	ms.topic	ms.custom
IS (MDX)	IS (MDX)	kfollis	kfollis	kfollis	02/17/2022	sql	analysis-services	reference	mdx

IS (MDX)

Performs a logical comparison on two object expressions.

Syntax

  
Expression1 IS ( Expression2 | NULL )  

Parameters

Expression1
A valid Multidimensional Expressions (MDX) expression that returns an MDX object reference.

Expression2
A valid MDX expression that returns an MDX object reference.

Return Value

A Boolean value that returns true if both arguments refer to the same object; otherwise, false. If the NULL keyword is specified, the operator returns true if Expression1 is null; otherwise, false.

Remarks

The IS operator is often used to determine whether tuples and members are idempotent, meaning that they are exactly equivalent.

Examples

The following example shows how to use the IS operator to check if the current member on an axis is a specific member:

With  
//Returns TRUE if the currentmember is Bikes  
Member [Measures].[IsBikes?] AS  
[Product].[Category].CurrentMember IS [Product].[Category].&[1]  
SELECT  
{[Measures].[IsBikes?]} ON 0,  
[Product].[Category].[Category].Members ON 1  
FROM  
[Adventure Works]  

See Also

MDX Operator Reference (MDX)