Draw.IO：SQL 插件上的外键

Question

Draw.IO 是否支持外键关系？使用许多不同的 SQL 示例（w3schools sql 外键）对其进行了测试，但都没有奏效。

Answer 1

由于预算问题，我只能将其实现为与 MySQL 和 SQL Server 以及 SQL Server 生成的脚本一起使用。拉取请求正在https://github.com/jgraph/drawio/pull/233上等待处理。

MySQL 示例：

CREATE TABLE Persons
(
PersonID int,
LastName varchar(255),
FirstName varchar(255),
Address varchar(255),
City varchar(255)
);

CREATE TABLE Orders (
    OrderID int NOT NULL,
    OrderNumber int NOT NULL,
    PersonID int,
    PRIMARY KEY (OrderID),
    FOREIGN KEY (OrderID) REFERENCES Persons(PersonID)
);

SQL 服务器示例：

CREATE TABLE Persons
(
PersonID int,
LastName varchar(255),
FirstName varchar(255),
Address varchar(255),
City varchar(255)
);

CREATE TABLE Orders (
    OrderID int NOT NULL,
    PRIMARY KEY (OrderID),
    CONSTRAINT FK_PersonOrder FOREIGN KEY (OrderID)
    REFERENCES Persons(PersonID)
);

SQL Server 生成的脚本示例：

CREATE TABLE [dbo].[aspnet_Applications](
    [ApplicationName] [nvarchar](256) NOT NULL,
    [LoweredApplicationName] [nvarchar](256) NOT NULL,
    [ApplicationId] [uniqueidentifier] NOT NULL,
    [Description] [nvarchar](256) NULL,
PRIMARY KEY NONCLUSTERED 
(
    [ApplicationId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY],
UNIQUE NONCLUSTERED 
(
    [LoweredApplicationName] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY],
UNIQUE NONCLUSTERED 
(
    [ApplicationName] 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

CREATE TABLE [dbo].[aspnet_Users](
    [ApplicationId] [uniqueidentifier] NOT NULL,
    [UserId] [uniqueidentifier] NOT NULL,
    [UserName] [nvarchar](256) NOT NULL,
    [LoweredUserName] [nvarchar](256) NOT NULL,
    [MobileAlias] [nvarchar](16) NULL,
    [IsAnonymous] [bit] NOT NULL,
    [LastActivityDate] [datetime] NOT NULL,
PRIMARY KEY NONCLUSTERED 
(
    [UserId] 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].[aspnet_Users]  WITH CHECK ADD FOREIGN KEY([ApplicationId])
REFERENCES [dbo].[aspnet_Applications] ([ApplicationId])
GO