QueryBuildingExtensions.Union(QueryNode, QueryNode, UnionType) Method

Combines rows from two or more queries into a single data set and removes duplicate rows.

Namespace: DevExpress.DataAccess.DataFederation

Assembly: DevExpress.DataAccess.v24.1.dll

NuGet Packages: DevExpress.DataAccess, DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap

Declaration

C#

public static UnionNodeBuilder Union(
    this QueryNode node,
    QueryNode added,
    UnionType unionType
)

VB.NET

<ExtensionAttribute>
Public Shared Function Union(
    node As QueryNode,
    added As QueryNode,
    unionType As UnionType
) As UnionNodeBuilder

Parameters

Name	Type	Description
node	QueryNode	A node in the federated query.
added	QueryNode	A node in the federated query.
unionType	UnionType	A Union type.

Returns

Type	Description
UnionNodeBuilder	A UnionNodeBuilder object for which a method is called.