CreateTableBuilder<TColumns>.UniqueConstraint Metoda

Definice

Obor názvů:

Microsoft.EntityFrameworkCore.Migrations.Operations.Builders

Sestavení:

Microsoft.EntityFrameworkCore.Relational.dll

Balíček:

Microsoft.EntityFrameworkCore.Relational v9.0.0

Zdroj:

CreateTableBuilder.cs

Konfiguruje jedinečné omezení tabulky.

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)

Parametry

name

String

Název omezení.

columns

Expression<Func<TColumns,Object>>

Sloupce, které tvoří omezení.

Návraty

OperationBuilder<AddUniqueConstraintOperation>

Stejný tvůrce, aby bylo možné zřetězených více volání.