MigrationBuilder.DropUniqueConstraint(String, String, String) Method

Definition

Namespace:

Microsoft.EntityFrameworkCore.Migrations

Assembly:

Microsoft.EntityFrameworkCore.Relational.dll

Package:

Microsoft.EntityFrameworkCore.Relational v8.0.0

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);

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.