AggregateExpression

Overview

AggregateExpression is a class used for processing a call to the DA LINQ aggregate operator (Count, Min, Max, Sum or Average), which applies to values selected by a query.

It computes a single value from a collection of values. For example, a maximum of the selected values.

Location

• Reference: RemObjects.DataAbstract.dll
• Namespace: RemObjects.DataAbstract.Linq
• Ancestry: BaseExpression | AggregateExpression

Properties

A type of aggregate operator (Count, Min, Max, Sum or Average) used on the argument expression.

property AggregateType: AggregateType read;

AggregateType AggregateType { get; }

ReadOnly Property AggregateType() As AggregateType

Query expression on which the aggregate operator is applied.

property Argument: Expression read;

Expression Argument { get; }

ReadOnly Property Argument() As Expression

property IsDistinct: Boolean read;

Boolean IsDistinct { get; }

ReadOnly Property IsDistinct() As Boolean

Instance Methods

constructor(type: Type; aggregateType: AggregateType; argument: Expression; isDistinct: Boolean)

AggregateExpression(Type type, AggregateType aggregateType, Expression argument, Boolean isDistinct)

Sub New(type As Type, aggregateType As AggregateType, argument As Expression, isDistinct As Boolean)

Parameters:

• type:
• aggregateType:
• argument:
• isDistinct: