MigrationBuilder.DropUniqueConstraint(String, String, String) Method
Definition
Important
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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
A builder to allow annotations to be added to the operation.
Remarks
See Database migrations for more information and examples.
Applies to
Entity Framework
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