QueryableExtensionMethods.StandardDeviation<TSource, TColumnType> Method (IQueryable<TSource>, Expression<Func<TSource, TColumnType>>) |
returns the standard deviation over the column specified by selector.
Namespace:
SD.LLBLGen.Pro.LinqSupportClasses
Assembly:
SD.LLBLGen.Pro.ORMSupportClasses (in SD.LLBLGen.Pro.ORMSupportClasses.dll) Version: 5.2.0.0 (5.2.17.0403)
Syntax public static double StandardDeviation<TSource, TColumnType>(
this IQueryable<TSource> source,
Expression<Func<TSource, TColumnType>> selector
)
<ExtensionAttribute>
Public Shared Function StandardDeviation(Of TSource, TColumnType) (
source As IQueryable(Of TSource),
selector As Expression(Of Func(Of TSource, TColumnType))
) As Double
Parameters
- source
- Type: System.Linq.IQueryable<TSource>
The source. - selector
- Type: System.Linq.Expressions.Expression<Func<TSource, TColumnType>>
The selector.
Type Parameters
- TSource
- The type of the source.
- TColumnType
- The type of the column type.
Return Value
Type:
DoubleThe standard deviation over the values in the column specified by selector.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IQueryable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see
Extension Methods (Visual Basic) or
Extension Methods (C# Programming Guide).
Remarks doesn't apply DISTINCT. If you want the standard deviation over only distinct values, use the overload which accepts a boolean.
See Also