Migrating database from ASP.NET Identity to ASP.NET Core Identity

asp-dot-net-identity-to-asp-dot-net-core-identity-migration-script.sql

-- STEP 1 : Change name of existing tables

EXEC sp_rename 'AspNetRoles', 'AspNetRoles_old';
EXEC sp_rename 'AspNetUserClaims', 'AspNetUserClaims_old';
EXEC sp_rename 'AspNetUserLogins', 'AspNetUserLogins_old';
EXEC sp_rename 'AspNetUserRoles', 'AspNetUserRoles_old';
EXEC sp_rename 'AspNetUsers', 'AspNetUsers_old';



-- STEP 2 : Create ASP.NET Core Identity tables

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[AspNetRoleClaims](
[Id] [int] IDENTITY(1,1) NOT NULL,
[RoleId] [nvarchar](450) NOT NULL,
[ClaimType] [nvarchar](max) NULL,
[ClaimValue] [nvarchar](max) NULL,
 CONSTRAINT [PK_AspNetRoleClaims] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO


SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[AspNetRoles](
[Id] [nvarchar](450) NOT NULL,
[Name] [nvarchar](256) NULL,
[NormalizedName] [nvarchar](256) NULL,
[ConcurrencyStamp] [nvarchar](max) NULL,
 CONSTRAINT [PK_AspNetRoles] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO


SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[AspNetUserClaims](
[Id] [int] IDENTITY(1,1) NOT NULL,
[UserId] [nvarchar](450) NOT NULL,
[ClaimType] [nvarchar](max) NULL,
[ClaimValue] [nvarchar](max) NULL,
 CONSTRAINT [PK_AspNetUserClaims] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO


SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[AspNetUserLogins](
[LoginProvider] [nvarchar](128) NOT NULL,
[ProviderKey] [nvarchar](128) NOT NULL,
[ProviderDisplayName] [nvarchar](max) NULL,
[UserId] [nvarchar](450) NOT NULL,
 CONSTRAINT [PK_AspNetUserLogins] PRIMARY KEY CLUSTERED
(
[LoginProvider] ASC,
[ProviderKey] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO


SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[AspNetUserRoles](
[UserId] [nvarchar](450) NOT NULL,
[RoleId] [nvarchar](450) NOT NULL,
 CONSTRAINT [PK_AspNetUserRoles] PRIMARY KEY CLUSTERED
(
[UserId] ASC,
[RoleId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO


SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[AspNetUsers](
[Id] [nvarchar](450) NOT NULL,
[UserName] [nvarchar](256) NULL,
[NormalizedUserName] [nvarchar](256) NULL,
[Email] [nvarchar](256) NULL,
[NormalizedEmail] [nvarchar](256) NULL,
[EmailConfirmed] [bit] NOT NULL,
[PasswordHash] [nvarchar](max) NULL,
[SecurityStamp] [nvarchar](max) NULL,
[ConcurrencyStamp] [nvarchar](max) NULL,
[PhoneNumber] [nvarchar](max) NULL,
[PhoneNumberConfirmed] [bit] NOT NULL,
[TwoFactorEnabled] [bit] NOT NULL,
[LockoutEnd] [datetimeoffset](7) NULL,
[LockoutEnabled] [bit] NOT NULL,
[AccessFailedCount] [int] NOT NULL,
 CONSTRAINT [PK_AspNetUsers] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO


SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[AspNetUserTokens](
[UserId] [nvarchar](450) NOT NULL,
[LoginProvider] [nvarchar](128) NOT NULL,
[Name] [nvarchar](128) NOT NULL,
[Value] [nvarchar](max) NULL,
 CONSTRAINT [PK_AspNetUserTokens] PRIMARY KEY CLUSTERED
(
[UserId] ASC,
[LoginProvider] ASC,
[Name] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY] TEXTIMAGE_ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO


CREATE NONCLUSTERED INDEX [IX_AspNetRoleClaims_RoleId] ON [dbo].[AspNetRoleClaims]
(
[RoleId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO


CREATE UNIQUE NONCLUSTERED INDEX [RoleNameIndex] ON [dbo].[AspNetRoles]
(
[NormalizedName] ASC
)
WHERE ([NormalizedName] IS NOT NULL)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO


CREATE NONCLUSTERED INDEX [IX_AspNetUserClaims_UserId] ON [dbo].[AspNetUserClaims]
(
[UserId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO


CREATE NONCLUSTERED INDEX [IX_AspNetUserLogins_UserId] ON [dbo].[AspNetUserLogins]
(
[UserId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO


CREATE NONCLUSTERED INDEX [IX_AspNetUserRoles_RoleId] ON [dbo].[AspNetUserRoles]
(
[RoleId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO


CREATE NONCLUSTERED INDEX [EmailIndex] ON [dbo].[AspNetUsers]
(
[NormalizedEmail] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO
SET ANSI_PADDING ON
GO


CREATE UNIQUE NONCLUSTERED INDEX [UserNameIndex] ON [dbo].[AspNetUsers]
(
[NormalizedUserName] ASC
)
WHERE ([NormalizedUserName] IS NOT NULL)
WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
GO
ALTER TABLE [dbo].[AspNetRoleClaims]  WITH CHECK ADD  CONSTRAINT [FK_AspNetRoleClaims_AspNetRoles_RoleId] FOREIGN KEY([RoleId])
REFERENCES [dbo].[AspNetRoles] ([Id])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[AspNetRoleClaims] CHECK CONSTRAINT [FK_AspNetRoleClaims_AspNetRoles_RoleId]
GO
ALTER TABLE [dbo].[AspNetUserClaims]  WITH CHECK ADD  CONSTRAINT [FK_AspNetUserClaims_AspNetUsers_UserId] FOREIGN KEY([UserId])
REFERENCES [dbo].[AspNetUsers] ([Id])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[AspNetUserClaims] CHECK CONSTRAINT [FK_AspNetUserClaims_AspNetUsers_UserId]
GO
ALTER TABLE [dbo].[AspNetUserLogins]  WITH CHECK ADD  CONSTRAINT [FK_AspNetUserLogins_AspNetUsers_UserId] FOREIGN KEY([UserId])
REFERENCES [dbo].[AspNetUsers] ([Id])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[AspNetUserLogins] CHECK CONSTRAINT [FK_AspNetUserLogins_AspNetUsers_UserId]
GO
ALTER TABLE [dbo].[AspNetUserRoles]  WITH CHECK ADD  CONSTRAINT [FK_AspNetUserRoles_AspNetRoles_RoleId] FOREIGN KEY([RoleId])
REFERENCES [dbo].[AspNetRoles] ([Id])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[AspNetUserRoles] CHECK CONSTRAINT [FK_AspNetUserRoles_AspNetRoles_RoleId]
GO
ALTER TABLE [dbo].[AspNetUserRoles]  WITH CHECK ADD  CONSTRAINT [FK_AspNetUserRoles_AspNetUsers_UserId] FOREIGN KEY([UserId])
REFERENCES [dbo].[AspNetUsers] ([Id])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[AspNetUserRoles] CHECK CONSTRAINT [FK_AspNetUserRoles_AspNetUsers_UserId]
GO
ALTER TABLE [dbo].[AspNetUserTokens]  WITH CHECK ADD  CONSTRAINT [FK_AspNetUserTokens_AspNetUsers_UserId] FOREIGN KEY([UserId])
REFERENCES [dbo].[AspNetUsers] ([Id])
ON DELETE CASCADE
GO
ALTER TABLE [dbo].[AspNetUserTokens] CHECK CONSTRAINT [FK_AspNetUserTokens_AspNetUsers_UserId]
GO



-- STEP 3 : Migrate data from old tables (ASP.NET Identity) to new tables (ASP.NET Core Identity)

INSERT INTO AspNetRoles ([Id], [Name], [NormalizedName], [ConcurrencyStamp])
SELECT [Id], [Name], UPPER([Name]), LOWER(NEWID()) FROM AspNetRoles_old;

INSERT INTO AspNetUsers ([Id], [UserName], [NormalizedUserName], [Email], [NormalizedEmail], [EmailConfirmed], [PasswordHash], [SecurityStamp], [ConcurrencyStamp], [PhoneNumber], [PhoneNumberConfirmed], [TwoFactorEnabled], [LockoutEnd], [LockoutEnabled], [AccessFailedCount])
SELECT [Id], [UserName], UPPER([UserName]), [Email], UPPER([Email]), [EmailConfirmed], [PasswordHash], [SecurityStamp], LOWER(NEWID()), [PhoneNumber], [PhoneNumberConfirmed], 0, null, 1, 0 FROM AspNetUsers_old;

INSERT INTO AspNetUserRoles ([UserId], [RoleId])
SELECT [UserId], [RoleId] FROM AspNetUserRoles_old;

Thanks! it was very helpful.

One thing to pay attention to is that renaming via 'sp_rename' also alters any foreign keys present on tables outside the identity system. For example a FK that points to AspNetUsers.Id after the rename will point to AspNetUsers_old .. It is therefore necessary to fix the foreign key.

How would you go about doing this for the smoothest migration possible? I have customer solutions relying on the old Identity so I am researching if this is a viable option.