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# Median (MDX)

SQL Server 2005

Updated: 12 December 2006

Returns the median value of a numeric expression that is evaluated over a set.

## Syntax

```
Median(Set_Expression [ ,Numeric_Expression ] )
```

## Arguments

Set_Expression

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

Numeric_Expression

A valid numeric expression that is typically a Multidimensional Expressions (MDX) expression of cell coordinates that return a number.

## Remarks

If a numeric expression is specified, the specified numeric expression is evaluated across the set and then returns the median value from that evaluation. If a numeric expression is not specified, the specified set is evaluated in the current context of the members of the set and returns the median value from the evaluation.

The median value is the middle value in a set of ordered numbers. (The medial value is unlike the mean value, which is the sum of a set of numbers divided by the count of numbers in the set). The median value is determined by choosing the smallest value such that at least half of the values in the set are no greater than the chosen value. If the number of values within the set is odd, the median value corresponds to a single value. If the number of values within the set is even, the median value corresponds to the sum of the two middle values divided by two.

Note:
Analysis Services ignores nulls when calculating the median value in a set of ordered numbers.

### Example

The following example returns the median quarterly sales for each subcategory and each country in the Adventure Works cube.

```WITH MEMBER Measures.x AS Median
([Date].[Calendar].CurrentMember.Children
, [Measures].[Reseller Order Quantity]
)
SELECT Measures.x ON 0
,NON EMPTY [Date].[Calendar].[Calendar Quarter]*
[Product].[Product Categories].[Subcategory].members *
[Geography].[Geography].[Country].Members
ON 1

```

#### Reference

MDX Function Reference (MDX)

#### Help and Information

Getting SQL Server 2005 Assistance

## Change History

Release History

12 December 2006

Changed content:
• Clarified impact of nulls.

17 July 2006

Changed content:
• Updated syntax and arguments to improve clarity.