CreateTableBuilder<TColumns>.UniqueConstraint Yöntem

  • Başvuru

Tanım

Ad Alanı:
Microsoft.EntityFrameworkCore.Migrations.Operations.Builders
Bütünleştirilmiş Kod:
Microsoft.EntityFrameworkCore.Relational.dll
Paket:
Microsoft.EntityFrameworkCore.Relational v1.0.6
Paket:
Microsoft.EntityFrameworkCore.Relational v1.1.6
Paket:
Microsoft.EntityFrameworkCore.Relational v2.0.3
Paket:
Microsoft.EntityFrameworkCore.Relational v2.1.11
Paket:
Microsoft.EntityFrameworkCore.Relational v2.2.6
Paket:
Microsoft.EntityFrameworkCore.Relational v3.0.0
Paket:
Microsoft.EntityFrameworkCore.Relational v3.1.0
Paket:
Microsoft.EntityFrameworkCore.Relational v5.0.0
Paket:
Microsoft.EntityFrameworkCore.Relational v6.0.0
Paket:
Microsoft.EntityFrameworkCore.Relational v7.0.0
Paket:
Microsoft.EntityFrameworkCore.Relational v8.0.0

Tabloda benzersiz bir kısıtlama yapılandırılır.

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation> UniqueConstraint (string name, System.Linq.Expressions.Expression<Func<TColumns,object>> columns);
abstract member UniqueConstraint : string * System.Linq.Expressions.Expression<Func<'Columns, obj>> -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation>
override this.UniqueConstraint : string * System.Linq.Expressions.Expression<Func<'Columns, obj>> -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation>
Public Overridable Function UniqueConstraint (name As String, columns As Expression(Of Func(Of TColumns, Object))) As OperationBuilder(Of AddUniqueConstraintOperation)

Parametreler

name
String

Kısıtlama adı.

columns
Expression<Func<TColumns,Object>>

Kısıtlamayı oluşturan sütunlar.

Döndürülenler

OperationBuilder<AddUniqueConstraintOperation>

Birden çok çağrının zincirlenebilmesi için aynı oluşturucu.

Şunlara uygulanır