intersect-mdx.md

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

Intersect (MDX)

Returns the intersection of two input sets, optionally retaining duplicates.

Syntax

  
Intersect(Set_Expression1 , Set_Expression2 [ , ALL ] )  

Arguments

Set_Expression1
A valid Multidimensional Expressions (MDX) expression that returns a set.

Set_Expression2
A valid Multidimensional Expressions (MDX) expression that returns a set.

Remarks

The Intersect function returns the intersection of two sets. By default, the function removes duplicates from both sets prior to intersecting the sets. The two sets specified must have the same dimensionality.

The optional ALL flag retains duplicates. If ALL is specified, the Intersect function intersects nonduplicated elements as usual, and also intersects each duplicate in the first set that has a matching duplicate in the second set. The two sets specified must have the same dimensionality.

Example

The following query returns the Years 2003 and 2004, the two members that appear in both the sets specified:

SELECT  
INTERSECT(  
{[Date].[Calendar Year].&[2001], [Date].[Calendar Year].&[2002],[Date].[Calendar Year].&[2003]}  
, {[Date].[Calendar Year].&[2002],[Date].[Calendar Year].&[2003], [Date].[Calendar Year].&[2004]})  
ON 0  
FROM  
[Adventure Works]  

The following query fails because the two sets specified contain members from different hierarchies:

SELECT  
INTERSECT(  
{[Date].[Calendar Year].&[2001]}  
, {[Customer].[City].&[Abingdon]&[ENG]})  
ON 0  
FROM  
[Adventure Works]  

See Also

MDX Function Reference (MDX)