QueryNode Class

A base class for SQL query that retrieves data from one or more sources.

Namespace : DevExpress.DataAccess.DataFederation

Assembly : DevExpress.DataAccess.v25.2.dll

NuGet Package : DevExpress.DataAccess

Declaration

csharp

public abstract class QueryNode :
    IQueryNode,
    IAliasedNode,
    IJoinNode,
    IQuery

Public MustInherit Class QueryNode
    Implements IQueryNode,
               IAliasedNode,
               IJoinNode,
               IQuery

The following members return QueryNode objects:

Library	Related API Members
Cross-Platform Class Library	DataSourceModel.Query
FederationDataSourceModel.Query
IFederationDataSourceModel.Query
QueryNodeCollection.Item[Int32]
QueryNodeCollection.Item[String]
.NET Reporting Tools	XtraReportModel.Query

You can create federated queries of the following types: