我一直在尝试使用 ASP.NET Identity 2.2.0 迁移在 MVC5 上运行的现有应用程序，但无法找到正确的信息，我想问一下您应该如何进行此迁移？
我在这个问题上用了几个小时，并找到了一个解决方案，它允许我在旧的但已迁移的数据库上使用身份 3.0.0-rc1-final 和 ef7 登录。
我将发布我所做的作为答案，但我非常想要灵感或其他方式来完成它。
【问题讨论】：
标签： entity-framework asp.net-core-mvc entity-framework-migrations
首先我使用以下命令生成了一个新的迁移
dnx ef migration add MigrateIdentityFrameworkFrom2to3
这在 Migrations 文件夹中生成了两个文件
快照与 ef6 相同，是对数据库外观的描述。另一个文件是包含用于迁移数据库的 Up 和 Down 命令的实际迁移。
迁移到 Identity 3.0.0-rc1-final 架构的问题似乎是
一般来说，AspNetUsers 和 AspNetRole 上的主键以及这些表的外键长度已从 128 更改为 450
以下是我用来登录 MVC6 应用程序的 Up 和 Down 命令：
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropForeignKey("FK_dbo.AspNetUserRoles_dbo.AspNetRoles_RoleId", "AspNetUserRoles");
migrationBuilder.DropPrimaryKey("PK_dbo.AspNetRoles", "AspNetRoles");
migrationBuilder.Sql(@"
ALTER TABLE[AspNetRoles]
ALTER COLUMN[Id] NVARCHAR(450) NOT NULL
ALTER TABLE[AspNetUserRoles]
ALTER COLUMN[RoleId] NVARCHAR(450) NOT NULL");
migrationBuilder.AddPrimaryKey("PK_dbo.AspNetRoles", "AspNetRoles", "Id");
migrationBuilder.AddForeignKey("FK_dbo.AspNetUserRoles_dbo.AspNetRoles_RoleId", "AspNetUserRoles", "RoleId", "AspNetRoles", principalColumn:"Id");
migrationBuilder.DropForeignKey("FK_dbo.AspNetUserClaims_dbo.AspNetUsers_UserId", "AspNetUserClaims");
migrationBuilder.DropForeignKey("FK_dbo.AspNetUserLogins_dbo.AspNetUsers_UserId", "AspNetUserLogins");
migrationBuilder.DropForeignKey("FK_dbo.User_dbo.AspNetUsers_IdentityUser_Id", "User");
migrationBuilder.DropForeignKey("FK_dbo.AspNetUserRoles_dbo.AspNetUsers_UserId", "AspNetUserRoles");
migrationBuilder.DropPrimaryKey("PK_dbo.AspNetUsers", "AspNetUsers");
migrationBuilder.Sql(@"
ALTER TABLE [AspNetUsers]
ALTER COLUMN [Id] NVARCHAR(450) NOT NULL
ALTER TABLE[AspNetUserRoles]
ALTER COLUMN[UserId] NVARCHAR(450) NOT NULL
ALTER TABLE[User]
ALTER COLUMN[IdentityUser_Id] NVARCHAR(450) NOT NULL
ALTER TABLE[AspNetUserLogins]
ALTER COLUMN[UserId] NVARCHAR(450) NOT NULL
ALTER TABLE[AspNetUserClaims]
ALTER COLUMN[UserId] NVARCHAR(450) NOT NULL");
migrationBuilder.AddPrimaryKey("PK_dbo.AspNetUsers", "AspNetUsers", "Id");
migrationBuilder.AddForeignKey("FK_dbo.AspNetUserRoles_dbo.AspNetUsers_UserId", "AspNetUserRoles", "UserId", "AspNetUsers", principalColumn: "Id");
migrationBuilder.AddForeignKey("FK_dbo.User_dbo.AspNetUsers_IdentityUser_Id", "User", "IdentityUser_Id", "AspNetUsers", principalColumn: "Id");
migrationBuilder.AddForeignKey("FK_dbo.AspNetUserLogins_dbo.AspNetUsers_UserId", "AspNetUserLogins", "UserId", "AspNetUsers", principalColumn: "Id");
migrationBuilder.AddForeignKey("FK_dbo.AspNetUserClaims_dbo.AspNetUsers_UserId", "AspNetUserClaims", "UserId", "AspNetUsers", principalColumn: "Id");
migrationBuilder.AddColumn<string>(name: "ConcurrencyStamp", table: "AspNetRoles", nullable: true);
migrationBuilder.AddColumn<string>(name: "NormalizedName", table: "AspNetRoles", nullable: true);
migrationBuilder.Sql(@"UPDATE AspNetRoles SET NormalizedName = UPPER(Name)");
migrationBuilder.AddColumn<string>(name: "ConcurrencyStamp", table: "AspNetUsers", nullable: true);
migrationBuilder.AddColumn<string>(name: "LockoutEnd", table: "AspNetUsers", nullable: true);
migrationBuilder.AddColumn<string>(name: "NormalizedEmail", table: "AspNetUsers", nullable: true);
migrationBuilder.AddColumn<string>(name: "NormalizedUserName", table: "AspNetUsers", nullable: true);
migrationBuilder.Sql(@"UPDATE AspNetUsers SET NormalizedEmail = UPPER(Email), NormalizedUserName = UPPER(UserName)"); // MVC6 utilizes Email as login by default with forms authentication, and searches for the email in NormalizedUserName, I changed the login formular to utilize UserName instead of email when logging in, alternatively you can put in the email as NormalizedUserName.
migrationBuilder.CreateTable(
name: "AspNetRoleClaims",
columns: table => new
{
Id = table.Column<int>(nullable: false)
.Annotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn),
ClaimType = table.Column<string>(nullable: true),
ClaimValue = table.Column<string>(nullable: true),
RoleId = table.Column<string>(nullable: false)
},
constraints: table =>
{
table.PrimaryKey("PK_IdentityRoleClaim<string>", x => x.Id);
table.ForeignKey(
name: "FK_IdentityRoleClaim<string>_IdentityRole_RoleId",
column: x => x.RoleId,
principalTable: "AspNetRoles",
principalColumn: "Id",
onDelete: ReferentialAction.Cascade);
});
migrationBuilder.AddColumn<string>(name: "ProviderDisplayName", table: "AspNetUserLogins", nullable: true);
migrationBuilder.DropIndex(
name: "RoleNameIndex",
table: "AspNetRoles");
migrationBuilder.CreateIndex(
name: "RoleNameIndex",
table: "AspNetRoles",
column: "NormalizedName");
migrationBuilder.CreateIndex(
name: "EmailIndex",
table: "AspNetUsers",
column: "NormalizedEmail");
migrationBuilder.DropIndex(
name: "UserNameIndex",
table: "AspNetUsers");
migrationBuilder.CreateIndex(
name: "UserNameIndex",
table: "AspNetUsers",
column: "NormalizedUserName");
}
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropForeignKey("FK_dbo.AspNetUserRoles_dbo.AspNetRoles_RoleId", "AspNetUserRoles");
migrationBuilder.DropPrimaryKey("PK_dbo.AspNetRoles", "AspNetRoles");
migrationBuilder.Sql(@"ALTER TABLE [AspNetRoles]
ALTER COLUMN [Id] NVARCHAR(128) NOT NULL
ALTER TABLE[AspNetUserRoles]
ALTER COLUMN[RoleId] NVARCHAR(128) NOT NULL");
migrationBuilder.AddPrimaryKey("PK_dbo.AspNetRoles", "AspNetRoles", "Id");
migrationBuilder.AddForeignKey("FK_dbo.AspNetUserRoles_dbo.AspNetRoles_RoleId", "AspNetUserRoles", "RoleId", "AspNetRoles", principalColumn: "Id");
migrationBuilder.DropForeignKey("FK_dbo.AspNetUserClaims_dbo.AspNetUsers_UserId", "AspNetUserClaims");
migrationBuilder.DropForeignKey("FK_dbo.AspNetUserLogins_dbo.AspNetUsers_UserId", "AspNetUserLogins");
migrationBuilder.DropForeignKey("FK_dbo.User_dbo.AspNetUsers_IdentityUser_Id", "User");
migrationBuilder.DropForeignKey("FK_dbo.AspNetUserRoles_dbo.AspNetUsers_UserId", "AspNetUserRoles");
migrationBuilder.DropPrimaryKey("PK_dbo.AspNetUsers", "AspNetUsers");
migrationBuilder.Sql(@"ALTER TABLE [AspNetUsers]
ALTER COLUMN [Id] NVARCHAR(128) NOT NULL
ALTER TABLE[AspNetUserRoles]
ALTER COLUMN[UserId] NVARCHAR(128) NOT NULL
ALTER TABLE[User]
ALTER COLUMN[IdentityUser_Id] NVARCHAR(128) NOT NULL
ALTER TABLE[AspNetUserLogins]
ALTER COLUMN[UserId] NVARCHAR(128) NOT NULL
ALTER TABLE[AspNetUserClaims]
ALTER COLUMN[UserId] NVARCHAR(128) NOT NULL");
migrationBuilder.AddPrimaryKey("PK_dbo.AspNetUsers", "AspNetUsers", "Id");
migrationBuilder.AddForeignKey("FK_dbo.AspNetUserRoles_dbo.AspNetUsers_UserId", "AspNetUserRoles", "UserId", "AspNetUsers", principalColumn: "Id");
migrationBuilder.AddForeignKey("FK_dbo.User_dbo.AspNetUsers_IdentityUser_Id", "User", "IdentityUser_Id", "AspNetUsers", principalColumn: "Id");
migrationBuilder.AddForeignKey("FK_dbo.AspNetUserLogins_dbo.AspNetUsers_UserId", "AspNetUserLogins", "UserId", "AspNetUsers", principalColumn: "Id");
migrationBuilder.AddForeignKey("FK_dbo.AspNetUserClaims_dbo.AspNetUsers_UserId", "AspNetUserClaims", "UserId", "AspNetUsers", principalColumn: "Id");
migrationBuilder.DropTable("AspNetRoleClaims");
migrationBuilder.DropColumn(name: "ConcurrencyStamp", table: "AspNetRoles");
migrationBuilder.DropColumn(name: "NormalizedName", table: "AspNetRoles");
migrationBuilder.DropColumn(name: "ConcurrencyStamp", table: "AspNetUsers");
migrationBuilder.DropColumn(name: "LockoutEnd", table: "AspNetUsers");
migrationBuilder.DropColumn(name: "NormalizedEmail", table: "AspNetUsers");
migrationBuilder.DropColumn(name: "NormalizedUserName", table: "AspNetUsers");
migrationBuilder.DropColumn(name: "ProviderDisplayName", table: "AspNetUserLogins");
migrationBuilder.DropIndex(
name: "RoleNameIndex",
table: "AspNetRoles");
migrationBuilder.CreateIndex(
name: "RoleNameIndex",
table: "AspNetRoles",
column: "Name");
migrationBuilder.DropIndex(
name: "EmailIndex",
table: "AspNetUsers");
migrationBuilder.DropIndex(
name: "UserNameIndex",
table: "AspNetUsers");
migrationBuilder.CreateIndex(
name: "UserNameIndex",
table: "AspNetUsers",
column: "UserName");
}
【讨论】：
这是一个 SQL 脚本，用于将 Identity 2 数据库转换为 Identity Core（或 Identity 3，如果您愿意）。备注：
此脚本由 Visual Studio 架构比较工具生成，然后手动修改。该脚本的目标是在不删除 AspNetUsers 表的情况下迁移架构。在此过程中删除并重新创建其他表，并复制数据。如果您对用户表以外的表进行了修改，或者如果您修改了用户表的 PK，您应该相应地修改脚本。与 PK 大小相关的默认架构相比，有几处更改。
users 表的 PK 为 NVARCHAR(128)，就像它在 Identity 2 中一样，而不是 Identity 3 使用的 NVARCHAR(450)。其他表中的所有关系也都改为NVARCHAR(128)
角色表的 PK 为 NVARCHAR(128)。有几个警告与最大密钥大小超过 900 字节的密钥（包括角色 ID）有关。
仍有一些与登录提供程序具有较长密钥相关的警告，但我认为让 ProviderKey 为 450 个字符是合理的风险，因为实际的外部提供程序可能使用大密钥。请注意，默认的 ASP.NET Identity 3 架构具有更大的主键。
我最初在此处发布了脚本 - https://github.com/Eirenarch/Identity2to3 如果需要进一步更改或发现错误，我可能会修改此版本。
PRINT N'Dropping [dbo].[AspNetUserClaims].[IX_UserId]...';
GO
DROP INDEX [IX_UserId] ON [dbo].[AspNetUserClaims];
GO
PRINT N'Dropping [dbo].[AspNetUserLogins].[IX_UserId]...';
GO
DROP INDEX [IX_UserId] ON [dbo].[AspNetUserLogins];
GO
PRINT N'Dropping [dbo].[AspNetUserRoles].[IX_RoleId]...';
GO
DROP INDEX [IX_RoleId] ON [dbo].[AspNetUserRoles];
GO
PRINT N'Dropping [dbo].[AspNetUserRoles].[IX_UserId]...';
GO
DROP INDEX [IX_UserId] ON [dbo].[AspNetUserRoles];
GO
PRINT N'Dropping [dbo].[FK_dbo.AspNetUserRoles_dbo.AspNetRoles_RoleId]...';
GO
ALTER TABLE [dbo].[AspNetUserRoles] DROP CONSTRAINT [FK_dbo.AspNetUserRoles_dbo.AspNetRoles_RoleId];
GO
PRINT N'Dropping [dbo].[FK_dbo.AspNetUserClaims_dbo.AspNetUsers_UserId]...';
GO
ALTER TABLE [dbo].[AspNetUserClaims] DROP CONSTRAINT [FK_dbo.AspNetUserClaims_dbo.AspNetUsers_UserId];
GO
PRINT N'Dropping [dbo].[FK_dbo.AspNetUserLogins_dbo.AspNetUsers_UserId]...';
GO
ALTER TABLE [dbo].[AspNetUserLogins] DROP CONSTRAINT [FK_dbo.AspNetUserLogins_dbo.AspNetUsers_UserId];
GO
PRINT N'Dropping [dbo].[FK_dbo.AspNetUserRoles_dbo.AspNetUsers_UserId]...';
GO
ALTER TABLE [dbo].[AspNetUserRoles] DROP CONSTRAINT [FK_dbo.AspNetUserRoles_dbo.AspNetUsers_UserId];
GO
PRINT N'Starting rebuilding table [dbo].[AspNetRoles]...';
GO
BEGIN TRANSACTION;
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
SET XACT_ABORT ON;
CREATE TABLE [dbo].[tmp_ms_xx_AspNetRoles] (
[Id] NVARCHAR (128) NOT NULL,
[ConcurrencyStamp] NVARCHAR (MAX) NULL,
[Name] NVARCHAR (256) NULL,
[NormalizedName] NVARCHAR (256) NULL,
CONSTRAINT [tmp_ms_xx_constraint_PK_AspNetRoles1] PRIMARY KEY CLUSTERED ([Id] ASC)
);
IF EXISTS (SELECT TOP 1 1
FROM [dbo].[AspNetRoles])
BEGIN
INSERT INTO [dbo].[tmp_ms_xx_AspNetRoles] ([Id], [Name], [NormalizedName])
SELECT [Id],
[Name],
UPPER([Name])
FROM [dbo].[AspNetRoles]
ORDER BY [Id] ASC;
END
DROP TABLE [dbo].[AspNetRoles];
EXECUTE sp_rename N'[dbo].[tmp_ms_xx_AspNetRoles]', N'AspNetRoles';
EXECUTE sp_rename N'[dbo].[tmp_ms_xx_constraint_PK_AspNetRoles1]', N'PK_AspNetRoles', N'OBJECT';
COMMIT TRANSACTION;
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
GO
PRINT N'Creating [dbo].[AspNetRoles].[RoleNameIndex]...';
GO
CREATE NONCLUSTERED INDEX [RoleNameIndex]
ON [dbo].[AspNetRoles]([NormalizedName] ASC);
GO
PRINT N'Starting rebuilding table [dbo].[AspNetUserClaims]...';
GO
BEGIN TRANSACTION;
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
SET XACT_ABORT ON;
CREATE TABLE [dbo].[tmp_ms_xx_AspNetUserClaims] (
[Id] INT IDENTITY (1, 1) NOT NULL,
[ClaimType] NVARCHAR (MAX) NULL,
[ClaimValue] NVARCHAR (MAX) NULL,
[UserId] NVARCHAR (128) NOT NULL,
CONSTRAINT [tmp_ms_xx_constraint_PK_AspNetUserClaims1] PRIMARY KEY CLUSTERED ([Id] ASC)
);
IF EXISTS (SELECT TOP 1 1
FROM [dbo].[AspNetUserClaims])
BEGIN
SET IDENTITY_INSERT [dbo].[tmp_ms_xx_AspNetUserClaims] ON;
INSERT INTO [dbo].[tmp_ms_xx_AspNetUserClaims] ([Id], [UserId], [ClaimType], [ClaimValue])
SELECT [Id],
[UserId],
[ClaimType],
[ClaimValue]
FROM [dbo].[AspNetUserClaims]
ORDER BY [Id] ASC;
SET IDENTITY_INSERT [dbo].[tmp_ms_xx_AspNetUserClaims] OFF;
END
DROP TABLE [dbo].[AspNetUserClaims];
EXECUTE sp_rename N'[dbo].[tmp_ms_xx_AspNetUserClaims]', N'AspNetUserClaims';
EXECUTE sp_rename N'[dbo].[tmp_ms_xx_constraint_PK_AspNetUserClaims1]', N'PK_AspNetUserClaims', N'OBJECT';
COMMIT TRANSACTION;
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
GO
PRINT N'Creating [dbo].[AspNetUserClaims].[IX_AspNetUserClaims_UserId]...';
GO
CREATE NONCLUSTERED INDEX [IX_AspNetUserClaims_UserId]
ON [dbo].[AspNetUserClaims]([UserId] ASC);
GO
PRINT N'Starting rebuilding table [dbo].[AspNetUserLogins]...';
GO
BEGIN TRANSACTION;
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
SET XACT_ABORT ON;
CREATE TABLE [dbo].[tmp_ms_xx_AspNetUserLogins] (
[LoginProvider] NVARCHAR (128) NOT NULL,
[ProviderKey] NVARCHAR (450) NOT NULL,
[ProviderDisplayName] NVARCHAR (MAX) NULL,
[UserId] NVARCHAR (128) NOT NULL,
CONSTRAINT [tmp_ms_xx_constraint_PK_AspNetUserLogins1] PRIMARY KEY CLUSTERED ([LoginProvider] ASC, [ProviderKey] ASC)
);
IF EXISTS (SELECT TOP 1 1
FROM [dbo].[AspNetUserLogins])
BEGIN
INSERT INTO [dbo].[tmp_ms_xx_AspNetUserLogins] ([LoginProvider], [ProviderKey], [ProviderDisplayName], [UserId])
SELECT [LoginProvider],
[ProviderKey],
[LoginProvider] AS [ProviderDisplayName],
[UserId]
FROM [dbo].[AspNetUserLogins]
ORDER BY [LoginProvider] ASC, [ProviderKey] ASC;
END
DROP TABLE [dbo].[AspNetUserLogins];
EXECUTE sp_rename N'[dbo].[tmp_ms_xx_AspNetUserLogins]', N'AspNetUserLogins';
EXECUTE sp_rename N'[dbo].[tmp_ms_xx_constraint_PK_AspNetUserLogins1]', N'PK_AspNetUserLogins', N'OBJECT';
COMMIT TRANSACTION;
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
GO
PRINT N'Creating [dbo].[AspNetUserLogins].[IX_AspNetUserLogins_UserId]...';
GO
CREATE NONCLUSTERED INDEX [IX_AspNetUserLogins_UserId]
ON [dbo].[AspNetUserLogins]([UserId] ASC);
GO
PRINT N'Starting rebuilding table [dbo].[AspNetUserRoles]...';
GO
BEGIN TRANSACTION;
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
SET XACT_ABORT ON;
CREATE TABLE [dbo].[tmp_ms_xx_AspNetUserRoles] (
[UserId] NVARCHAR (128) NOT NULL,
[RoleId] NVARCHAR (128) NOT NULL,
CONSTRAINT [tmp_ms_xx_constraint_PK_AspNetUserRoles1] PRIMARY KEY CLUSTERED ([UserId] ASC, [RoleId] ASC)
);
IF EXISTS (SELECT TOP 1 1
FROM [dbo].[AspNetUserRoles])
BEGIN
INSERT INTO [dbo].[tmp_ms_xx_AspNetUserRoles] ([UserId], [RoleId])
SELECT [UserId],
[RoleId]
FROM [dbo].[AspNetUserRoles]
ORDER BY [UserId] ASC, [RoleId] ASC;
END
DROP TABLE [dbo].[AspNetUserRoles];
EXECUTE sp_rename N'[dbo].[tmp_ms_xx_AspNetUserRoles]', N'AspNetUserRoles';
EXECUTE sp_rename N'[dbo].[tmp_ms_xx_constraint_PK_AspNetUserRoles1]', N'PK_AspNetUserRoles', N'OBJECT';
COMMIT TRANSACTION;
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
GO
PRINT N'Creating [dbo].[AspNetUserRoles].[IX_AspNetUserRoles_RoleId]...';
GO
CREATE NONCLUSTERED INDEX [IX_AspNetUserRoles_RoleId]
ON [dbo].[AspNetUserRoles]([RoleId] ASC);
GO
PRINT N'Creating [dbo].[AspNetUserRoles].[IX_AspNetUserRoles_UserId]...';
GO
CREATE NONCLUSTERED INDEX [IX_AspNetUserRoles_UserId]
ON [dbo].[AspNetUserRoles]([UserId] ASC);
GO
-- CHANGE THE REST OF THE SCRIPT! We should NOT drop AspNetUsers
PRINT N'Starting rebuilding table [dbo].[AspNetUsers]...';
GO
BEGIN TRANSACTION;
SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
SET XACT_ABORT ON;
ALTER TABLE [dbo].[AspNetUsers]
ADD [ConcurrencyStamp] NVARCHAR(MAX) NULL
GO
ALTER TABLE [dbo].[AspNetUsers]
ADD [LockoutEnd] DATETIMEOFFSET(7) NULL
GO
ALTER TABLE [dbo].[AspNetUsers]
ADD [NormalizedEmail] NVARCHAR(256) NULL
GO
ALTER TABLE [dbo].[AspNetUsers]
ADD [NormalizedUserName] NVARCHAR(256) NULL
GO
DROP INDEX [UserNameIndex] ON [dbo].[AspNetUsers];
GO
UPDATE [dbo].[AspNetUsers]
SET [NormalizedEmail] = UPPER([Email]), [NormalizedUserName] = UPPER([UserName])
GO
COMMIT TRANSACTION;
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
GO
PRINT N'Creating [dbo].[AspNetUsers].[EmailIndex]...';
GO
CREATE NONCLUSTERED INDEX [EmailIndex]
ON [dbo].[AspNetUsers]([NormalizedEmail] ASC);
GO
PRINT N'Creating [dbo].[AspNetUsers].[UserNameIndex]...';
GO
CREATE UNIQUE NONCLUSTERED INDEX [UserNameIndex]
ON [dbo].[AspNetUsers]([NormalizedUserName] ASC);
GO
PRINT N'Creating [dbo].[AspNetRoleClaims]...';
GO
CREATE TABLE [dbo].[AspNetRoleClaims] (
[Id] INT IDENTITY (1, 1) NOT NULL,
[ClaimType] NVARCHAR (MAX) NULL,
[ClaimValue] NVARCHAR (MAX) NULL,
[RoleId] NVARCHAR (128) NOT NULL,
CONSTRAINT [PK_AspNetRoleClaims] PRIMARY KEY CLUSTERED ([Id] ASC)
);
GO
PRINT N'Creating [dbo].[AspNetRoleClaims].[IX_AspNetRoleClaims_RoleId]...';
GO
CREATE NONCLUSTERED INDEX [IX_AspNetRoleClaims_RoleId]
ON [dbo].[AspNetRoleClaims]([RoleId] ASC);
GO
PRINT N'Creating [dbo].[AspNetUserTokens]...';
GO
CREATE TABLE [dbo].[AspNetUserTokens] (
[UserId] NVARCHAR (128) NOT NULL,
[LoginProvider] NVARCHAR (128) NOT NULL,
[Name] NVARCHAR (450) NOT NULL,
[Value] NVARCHAR (MAX) NULL,
CONSTRAINT [PK_AspNetUserTokens] PRIMARY KEY CLUSTERED ([UserId] ASC, [LoginProvider] ASC, [Name] ASC)
);
GO
PRINT N'Creating [dbo].[FK_AspNetUserClaims_AspNetUsers_UserId]...';
GO
ALTER TABLE [dbo].[AspNetUserClaims] WITH NOCHECK
ADD CONSTRAINT [FK_AspNetUserClaims_AspNetUsers_UserId] FOREIGN KEY ([UserId]) REFERENCES [dbo].[AspNetUsers] ([Id]) ON DELETE CASCADE;
GO
PRINT N'Creating [dbo].[FK_AspNetUserLogins_AspNetUsers_UserId]...';
GO
ALTER TABLE [dbo].[AspNetUserLogins] WITH NOCHECK
ADD CONSTRAINT [FK_AspNetUserLogins_AspNetUsers_UserId] FOREIGN KEY ([UserId]) REFERENCES [dbo].[AspNetUsers] ([Id]) ON DELETE CASCADE;
GO
PRINT N'Creating [dbo].[FK_AspNetUserRoles_AspNetRoles_RoleId]...';
GO
ALTER TABLE [dbo].[AspNetUserRoles] WITH NOCHECK
ADD CONSTRAINT [FK_AspNetUserRoles_AspNetRoles_RoleId] FOREIGN KEY ([RoleId]) REFERENCES [dbo].[AspNetRoles] ([Id]) ON DELETE CASCADE;
GO
PRINT N'Creating [dbo].[FK_AspNetUserRoles_AspNetUsers_UserId]...';
GO
ALTER TABLE [dbo].[AspNetUserRoles] WITH NOCHECK
ADD CONSTRAINT [FK_AspNetUserRoles_AspNetUsers_UserId] FOREIGN KEY ([UserId]) REFERENCES [dbo].[AspNetUsers] ([Id]) ON DELETE CASCADE;
GO
PRINT N'Creating [dbo].[FK_AspNetRoleClaims_AspNetRoles_RoleId]...';
GO
ALTER TABLE [dbo].[AspNetRoleClaims] WITH NOCHECK
ADD CONSTRAINT [FK_AspNetRoleClaims_AspNetRoles_RoleId] FOREIGN KEY ([RoleId]) REFERENCES [dbo].[AspNetRoles] ([Id]) ON DELETE CASCADE;
GO
PRINT N'Checking existing data against newly created constraints';
GO
ALTER TABLE [dbo].[AspNetUserClaims] WITH CHECK CHECK CONSTRAINT [FK_AspNetUserClaims_AspNetUsers_UserId];
ALTER TABLE [dbo].[AspNetUserLogins] WITH CHECK CHECK CONSTRAINT [FK_AspNetUserLogins_AspNetUsers_UserId];
ALTER TABLE [dbo].[AspNetUserRoles] WITH CHECK CHECK CONSTRAINT [FK_AspNetUserRoles_AspNetRoles_RoleId];
ALTER TABLE [dbo].[AspNetUserRoles] WITH CHECK CHECK CONSTRAINT [FK_AspNetUserRoles_AspNetUsers_UserId];
ALTER TABLE [dbo].[AspNetRoleClaims] WITH CHECK CHECK CONSTRAINT [FK_AspNetRoleClaims_AspNetRoles_RoleId];
GO
PRINT N'Update complete.';
【讨论】：