MigrationBuilder.AddUniqueConstraint Method

Definition

Namespace:

Microsoft.EntityFrameworkCore.Migrations

Assembly:

Microsoft.EntityFrameworkCore.Relational.dll

Package:

Microsoft.EntityFrameworkCore.Relational v8.0.0

Overloads

AddUniqueConstraint(String, String, String, String)	Builds an AddUniqueConstraintOperation to add a new unique constraint to a table.
AddUniqueConstraint(String, String, String[], String)	Builds an AddUniqueConstraintOperation to add a new composite (multi-column) unique constraint to a table.

AddUniqueConstraint(String, String, String, String)

Builds an AddUniqueConstraintOperation to add a new unique constraint to a table.

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

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

Public Overridable Function AddUniqueConstraint (name As String, table As String, column As String, Optional schema As String = Nothing) As OperationBuilder(Of AddUniqueConstraintOperation)

Parameters

name

String

The constraint name.

table

String

The table that will contain the constraint.

column

String

The column that is constrained.

schema

String

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

Returns

OperationBuilder<AddUniqueConstraintOperation>

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

Remarks

See Database migrations for more information and examples.

AddUniqueConstraint(String, String, String[], String)

Builds an AddUniqueConstraintOperation to add a new composite (multi-column) unique constraint to a table.

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation> AddUniqueConstraint (string name, string table, string[] columns, string? schema = default);

abstract member AddUniqueConstraint : string * string * string[] * string -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation>
override this.AddUniqueConstraint : string * string * string[] * string -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation>

Public Overridable Function AddUniqueConstraint (name As String, table As String, columns As String(), Optional schema As String = Nothing) As OperationBuilder(Of AddUniqueConstraintOperation)

Parameters

name

String

The constraint name.

table

String

The table that will contain the constraint.

columns

String[]

The ordered list of columns that are constrained.

schema

String

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

Returns

OperationBuilder<AddUniqueConstraintOperation>

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

Remarks

See Database migrations for more information and examples.