EdmFunctions.StDev Method (DbExpression)

.NET Framework (current version)
 

Creates a DbFunctionExpression that invokes the canonical 'StDev' function over the non-null members of the specified collection. The result type of the expression is Edm.Double.

Namespace:   System.Data.Common.CommandTrees.ExpressionBuilder
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public static DbFunctionExpression StDev(
	this DbExpression collection
)

Parameters

collection
Type: System.Data.Common.CommandTrees.DbExpression

An expression that specifies the collection for which the standard deviation should be computed.

Return Value

Type: System.Data.Common.CommandTrees.DbFunctionExpression

A new DbFunctionExpression that produces the standard deviation value over non-null members of the collection.

Exception Condition
ArgumentNullException

collection

ArgumentException

collection

.NET Framework
Available since 4.5
Return to top
Show: