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MigrationsSqlGenerator.UniqueConstraint Methode

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Definition

Namespace:
Microsoft.EntityFrameworkCore.Migrations
Assembly:
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

Generiert ein SQL-Fragment für eine eindeutige Einschränkung eines AddUniqueConstraintOperation.

protected virtual void UniqueConstraint (Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation operation, Microsoft.EntityFrameworkCore.Metadata.IModel model, Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder builder);
protected virtual void UniqueConstraint (Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation operation, Microsoft.EntityFrameworkCore.Metadata.IModel? model, Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder builder);
abstract member UniqueConstraint : Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation * Microsoft.EntityFrameworkCore.Metadata.IModel * Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder -> unit
override this.UniqueConstraint : Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation * Microsoft.EntityFrameworkCore.Metadata.IModel * Microsoft.EntityFrameworkCore.Migrations.MigrationCommandListBuilder -> unit
Protected Overridable Sub UniqueConstraint (operation As AddUniqueConstraintOperation, model As IModel, builder As MigrationCommandListBuilder)

Parameter

operation
AddUniqueConstraintOperation

Der Vorgang.

model
IModel

Das Zielmodell, das sein kann, wenn die Vorgänge ohne ein Modell vorhanden sind null .

builder
MigrationCommandListBuilder

Der Befehls-Generator, der zum Hinzufügen des SQL-Fragments verwendet werden soll.

Gilt für: