MigrationBuilder.AlterTable 方法

定义

命名空间:

Microsoft.EntityFrameworkCore.Migrations

程序集:

Microsoft.EntityFrameworkCore.Relational.dll

包:

Microsoft.EntityFrameworkCore.Relational v9.0.0

重载

AlterTable(String, String, String, String)

生成 以 AlterTableOperation 更改现有表。

AlterTable(String, String, String, String)

Source:

MigrationBuilder.cs

生成 以 AlterTableOperation 更改现有表。

public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AlterTableOperation> AlterTable (string name, string? schema = default, string? comment = default, string? oldComment = default);

abstract member AlterTable : string * string * string * string -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AlterTableOperation>
override this.AlterTable : string * string * string * string -> Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.AlterOperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AlterTableOperation>

Public Overridable Function AlterTable (name As String, Optional schema As String = Nothing, Optional comment As String = Nothing, Optional oldComment As String = Nothing) As AlterOperationBuilder(Of AlterTableOperation)

参数

name

String

表名称。

schema

String

包含表的架构，或使用 null 默认架构。

comment

String

要与表关联的注释。

oldComment

String

要与表关联的上一条注释。

返回

AlterOperationBuilder<AlterTableOperation>

允许将批注添加到操作的生成器。

注解

有关详细信息和示例 ，请参阅数据库迁移 。