DbExpressionBuilder.Union(DbExpression, DbExpression) Method

Reference

Definition

Namespace:: System.Data.Common.CommandTrees.ExpressionBuilder

Assembly:: System.Data.Entity.dll

Important

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Creates a new DbExpression that computes the union of the left and right set arguments with duplicates removed.

public:
[System::Runtime::CompilerServices::Extension]
 static System::Data::Common::CommandTrees::DbExpression ^ Union(System::Data::Common::CommandTrees::DbExpression ^ left, System::Data::Common::CommandTrees::DbExpression ^ right);

public static System.Data.Common.CommandTrees.DbExpression Union (this System.Data.Common.CommandTrees.DbExpression left, System.Data.Common.CommandTrees.DbExpression right);

static member Union : System.Data.Common.CommandTrees.DbExpression * System.Data.Common.CommandTrees.DbExpression -> System.Data.Common.CommandTrees.DbExpression

<Extension()>
Public Function Union (left As DbExpression, right As DbExpression) As DbExpression

Parameters

left: DbExpression

An expression that defines the left set argument.

right: DbExpression

An expression that defines the right set argument.

Returns

DbExpression

A new DbExpression that computes the union, without duplicates, of the left and right arguments.

Exceptions

ArgumentNullException

left or right is null.

ArgumentException

No common collection result type with an equality-comparable element type exists between left and right.

Applies to

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