MigrationBuilder.DropUniqueConstraint(String, String, String) Method

Reference

Definition

Namespace:: Microsoft.EntityFrameworkCore.Migrations

Assembly:: Microsoft.EntityFrameworkCore.Relational.dll

Package:: Microsoft.EntityFrameworkCore.Relational v1.0.6

Package:: Microsoft.EntityFrameworkCore.Relational v1.1.6

Package:: Microsoft.EntityFrameworkCore.Relational v2.0.3

Package:: Microsoft.EntityFrameworkCore.Relational v2.1.11

Package:: Microsoft.EntityFrameworkCore.Relational v2.2.6

Package:: Microsoft.EntityFrameworkCore.Relational v3.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v3.1.0

Package:: Microsoft.EntityFrameworkCore.Relational v5.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v6.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v7.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v8.0.0

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Builds a DropUniqueConstraintOperation to drop an existing unique constraint.

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.DropUniqueConstraintOperation> DropUniqueConstraint (string name, string table, string schema = default);

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.DropUniqueConstraintOperation> DropUniqueConstraint (string name, string table, string? schema = default);

abstract member DropUniqueConstraint : string * string * string -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.DropUniqueConstraintOperation>
override this.DropUniqueConstraint : string * string * string -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.DropUniqueConstraintOperation>

Public Overridable Function DropUniqueConstraint (name As String, table As String, Optional schema As String = Nothing) As OperationBuilder(Of DropUniqueConstraintOperation)

Parameters

name: String

The name of the constraint to drop.

table: String

The table that contains the constraint.

schema: String

The schema that contains the table, or null to use the default schema.

Returns

OperationBuilder<DropUniqueConstraintOperation>

A builder to allow annotations to be added to the operation.

Remarks

See Database migrations for more information and examples.

Applies to