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我的数据库中有一个表继承。我有表“ Item”和表“ Something”。Item有ItemId哪个是主键和自动增量。在表中Something我有ItemId哪个是主键（不是自动增量）。这些表是1:1的关系。
所以我试图在这些表中插入数据，但这不起作用：

...
DECLARE @itemId int

    INSERT INTO dbo.Items
    (ItemTypeId,UserId,CreatedOnDate,Title,Description)
    VALUES
    (@p_ItemTypeId,@p_UserId,@p_CreatedOnDate,@p_Title,@p_Description)

    SELECT @itemId = SCOPE_IDENTITY()

    INSERT INTO dbo.Something
    (ItemsId)
    VALUES
    (@itemId)
...

这是我得到的错误：

The INSERT statement conflicted with the FOREIGN KEY constraint "FK_Items_Somethings".

表创建脚本：

CREATE TABLE [dbo].[Items](
    [ItemdId] [int] IDENTITY(1,1) NOT NULL,
    [ItemTypeId] [int] NULL,
    [UserId] [int] NULL,
    [CreatedOnDate] [smalldatetime] NULL,
    [Title] [nvarchar](50) NULL,
    [Description] [nvarchar](max) NULL,

 CONSTRAINT [PK_Items] PRIMARY KEY CLUSTERED 
(
    [ItemId] 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].[Items]  WITH CHECK ADD  CONSTRAINT [FK_Items_Somethings] FOREIGN KEY([ItemId])
REFERENCES [dbo].[Somethings] ([ItemId])
GO

ALTER TABLE [dbo].[Items] CHECK CONSTRAINT [FK_Items_Somethings]
GO


CREATE TABLE [dbo].[Somethings](
    [ItemId] [int] NOT NULL,
 CONSTRAINT [PK_Somethings] PRIMARY KEY CLUSTERED 
(
    [ItemId] 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
4

2 回答 2

1 
ALTER TABLE [dbo].[Items]  WITH CHECK ADD  CONSTRAINT [FK_Items_Somethings] FOREIGN KEY([ItemId])
REFERENCES [dbo].[Somethings] ([ItemId])

外键方向错误。

您应该将外键添加到 [dbo].[Somethings] 并引用 [dbo].[Items].ItemId 像这样：

ALTER TABLE [dbo].[Somethings]  WITH CHECK ADD  CONSTRAINT [FK_Somethings_Items] FOREIGN KEY([ItemId])
REFERENCES [dbo].[Items] ([ItemId])
于 2012-10-07T14:02:35.003 回答
1

In this script, you have inverted the inheritance between the tables. If Something table inherits from Item table then the FK has to be created at Table `Something' like this :

ALTER TABLE [dbo].[Somethings]  WITH CHECK ADD  CONSTRAINT [FK_Somethings_Items] FOREIGN KEY([ItemId])
REFERENCES [dbo].[Items] ([ItemId])
GO

ALTER TABLE [dbo].[Somethings] CHECK CONSTRAINT [FK_Somethings_Items]
GO
于 2012-10-07T14:23:32.903 回答