我正在开发.NET 4项目。最近一个列被添加到表“T”,之后,其他表与表T的所有关联都丢失了(任何具有来自表T的外键的表现在都没有)。我应该提到我们使用sqlmetal命令来更新与DBML相关的类文件。而且这个问题突然发生了,尽管DB经常更新并且之前没有这样的问题。在DBML designer.cs期间表关联丢失更新
如果问题与SQL Server或LINQ有关,我没有任何线索。任何人都可以帮助我吗?
表T:
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[T](
[Id] [int] IDENTITY(1,1) NOT NULL,
[Cid] [int] NULL,
[Guid] [uniqueidentifier] NOT NULL
CONSTRAINT [PK_T] 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]
GO
SET ANSI_PADDING OFF
GO
ALTER TABLE [dbo].[T] WITH CHECK ADD CONSTRAINT [FK_T_C] FOREIGN KEY([Cid])
REFERENCES [dbo].[C] ([Id])
GO
ALTER TABLE [dbo].[T] CHECK CONSTRAINT [FK_T_C]
GO
ALTER TABLE [dbo].[T] ADD CONSTRAINT [DF_T_Guid] DEFAULT (newid()) FOR [Guid]
GO
表我具有从表T外键:
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[I](
[Id] [int] IDENTITY(1,1) NOT NULL,
[Name] [nvarchar](512) NOT NULL,
[TId] [int] NOT NULL,
[Desc] [nvarchar](2000) NULL,
[Guid] [uniqueidentifier] NOT NULL
CONSTRAINT [PK_I] 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]
GO
ALTER TABLE [dbo].[I] WITH CHECK ADD CONSTRAINT [FK_I_T] FOREIGN KEY([TId])
REFERENCES [dbo].[T] ([Id])
GO
ALTER TABLE [dbo].[I] CHECK CONSTRAINT [FK_I_T]
GO
ALTER TABLE [dbo].[I] ADD CONSTRAINT [DF_I_Guid] DEFAULT (newid()) FOR [Guid]
GO
外键约束仍然存在于数据库中吗? – Pleun
是的,所有的关系都存在于数据库中 – Marjan