TopSum

Returns, in order of decreasing rank, the top-most rows of a table whose cumulative total is at least a specified value.

Syntax

TopSum(<table expression>, <rank expression>, <sum>)

Applies To

An expression that returns a table, such as a <table column reference>, or a function that returns a table.

Return Type

<table expression>

Remarks

The TopSum function returns the top-most rows in decreasing order of rank based on the evaluated value of the <rank expression> argument for each row, such that the sum of the <rank expression> values is at least the given total that is specified by the <sum> argument. TopSum returns the smallest number of elements possible while still meeting the specified sum value.

Examples

For example, assume that a table column named Products contains the following data:

In this example, the following function:

TopSum([Products], [Unit Sales], 2500) 

returns the following table:

See Also

Reference

Data Mining Extensions (DMX) Function Reference
Functions (DMX)
Mapping Functions to Query Types (DMX)

Help and Information

Getting SQL Server 2005 Assistance