Question

希望有人可以帮助我。我有一个错误 “ SQL71501 :: ::外键：[dbo]。[FK_AddressBook_Country]对列[dbo]。[AddressBook]。[CountryID]有未解决的引用。红线标记为[[CountryID）]。我找不到它的错。实际上，我关注了该站点http://demo.dotnetawesome.com/mvc/mycontactbook/part2，只是更改了表格。希望有人可以帮助我。非常感谢！

CREATE TABLE [dbo].[AddressBook] (
    [Id]           INT           NOT NULL,
    [Name]         VARCHAR (50)  NOT NULL,
    [Surname]      VARCHAR (50)  NOT NULL,
    [Address1]     VARCHAR (200) NOT NULL,
    [Address2]     VARCHAR (100) NULL,
    [Postcode]     VARCHAR (6)   NOT NULL,
    [Town]         VARCHAR (20)  NOT NULL,
    [Country]      VARCHAR (50)  NOT NULL,
    [Email]        VARCHAR (50)  NOT NULL,
    [MobileNumber] VARCHAR (20)  NOT NULL,
    [PictureUser]  VARCHAR (200) NULL,
    PRIMARY KEY CLUSTERED ([Id] ASC), 
    CONSTRAINT [FK_AddressBook_Country] FOREIGN KEY ([CountryID]) REFERENCES [Country]([CountryID])
);

CREATE TABLE [dbo].[Country] (
    [CountryID]   INT IDENTITY (1, 1) NOT NULL,
    [CountryName] VARCHAR (100) NOT NULL,
    PRIMARY KEY CLUSTERED ([CountryID] ASC)
);

Answer 1

这应该很好用，但是无论如何首先在“ FOREIGN KEY（[CountryID]）”中出现两个错误，您在AdresseBook中都没有名为“ CountryId”的字段，我认为您希望将“ Country”字段作为外键adressBook中的“国家/地区”字段必须与表“国家/地区”的CountryID具有相同的类型

 CREATE TABLE [dbo].[AddressBook] (
        [Id]           INT           NOT NULL,
        [Name]         VARCHAR (50)  NOT NULL,
        [Surname]      VARCHAR (50)  NOT NULL,
        [Address1]     VARCHAR (200) NOT NULL,
        [Address2]     VARCHAR (100) NULL,
        [Postcode]     VARCHAR (6)   NOT NULL,
        [Town]         VARCHAR (20)  NOT NULL,
        [Country]      INT  NOT NULL,
        [Email]        VARCHAR (50)  NOT NULL,
        [MobileNumber] VARCHAR (20)  NOT NULL,
        [PictureUser]  VARCHAR (200) NULL,
        PRIMARY KEY CLUSTERED ([Id] ASC), 
        CONSTRAINT [FK_AddressBook_Country] FOREIGN KEY ([Country]) REFERENCES [Country]([CountryID])
    );
    CREATE TABLE [dbo].[Country] (
        [CountryID]   INT IDENTITY (1, 1) NOT NULL,
        [CountryName] VARCHAR (100) NOT NULL,
        PRIMARY KEY CLUSTERED ([CountryID] ASC)
    );

SQL71501 ::外键：[dbo]。[FK_AddressBook_Country]有对列[dbo]。[AddressBook]的未解析引用。[CountryID]

1 个答案: