MigrationBuilder.AddUniqueConstraint 方法
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
重载
| AddUniqueConstraint(String, String, String, String) |
生成 以 AddUniqueConstraintOperation 向表添加新的唯一约束。 |
| AddUniqueConstraint(String, String, String[], String) |
生成 以 AddUniqueConstraintOperation 向表添加新的复合 (多列) 唯一约束。 |
AddUniqueConstraint(String, String, String, String)
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
生成 以 AddUniqueConstraintOperation 向表添加新的唯一约束。
public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation> AddUniqueConstraint (string name, string table, string column, string schema = default);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)参数
- name
- String
约束名称。
- table
- String
将包含约束的表。
- column
- String
受约束的列。
- schema
- String
包含表的架构，或使用 null 默认架构。
返回
一个生成器，允许将批注添加到操作中。
注解
有关详细信息和示例 ，请参阅数据库迁移 。
适用于
AddUniqueConstraint(String, String, String[], String)
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
- Source:
- MigrationBuilder.cs
生成 以 AddUniqueConstraintOperation 向表添加新的复合 (多列) 唯一约束。
public virtual Microsoft.EntityFrameworkCore.Migrations.Operations.Builders.OperationBuilder<Microsoft.EntityFrameworkCore.Migrations.Operations.AddUniqueConstraintOperation> AddUniqueConstraint (string name, string table, string[] columns, string schema = default);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)参数
- name
- String
约束名称。
- table
- String
将包含约束的表。
- columns
- String[]
受约束的列的有序列表。
- schema
- String
包含表的架构，或使用 null 默认架构。
返回
一个生成器，允许将批注添加到操作中。
注解
有关详细信息和示例 ，请参阅数据库迁移 。
