Question

我试图弄清楚如何重构以下sql以正确迁移到Mysql表

CREATE TABLE [LinkedAccountClaims](
[UserAccountID] [uniqueidentifier] NOT NULL,
[ProviderName] [nvarchar](30) NOT NULL,
[ProviderAccountID] [nvarchar](100) NOT NULL,
[Type] [nvarchar](150) NOT NULL,
[Value] [nvarchar](150) NOT NULL,
CONSTRAINT [PK_LinkedAccountClaims] PRIMARY KEY CLUSTERED 
(
[UserAccountID] ASC,
[ProviderName] ASC,
[ProviderAccountID] ASC,
[Type] ASC,
[Value] ASC)

CREATE NONCLUSTERED INDEX [IX_UserAccountID] ON [LinkedAccountClaims]
(   [UserAccountID] ASC)

ALTER TABLE [LinkedAccountClaims]  WITH CHECK ADD  CONSTRAINT     [FK_LinkedAccountClaims_UserAccounts_UserAccountID] FOREIGN KEY([UserAccountID])
REFERENCES [UserAccounts] ([ID])
ON DELETE CASCADE

到迁移，结构如下

CreateTable(
            "LinkedAccountClaims",
            c => new
            {
                UserAccountID = c.String(nullable: false, maxLength: 38, storeType: "char"),
                ProviderName = c.String(nullable: false, maxLength: 30, storeType: "nvarchar"),
                ProviderAccountID = c.String(nullable: false, maxLength: 100, storeType: "nvarchar"),
                Type = c.String(nullable: false, maxLength: 150, storeType: "nvarchar"),
                Value = c.String(nullable: false, maxLength: 150, storeType: "nvarchar"),
            })
            .PrimaryKey(t => t.UserAccountID)
            .PrimaryKey(t => t.ProviderName)
            .PrimaryKey(t => t.ProviderAccountID)
            .PrimaryKey(t => t.Type)
            .PrimaryKey(t => t.Value)
            .Index(t => t.UserAccountID);

我不确定我是否在迁移中正确地进行了主键聚类，而且我不确定如何处理外键。

更新这是正确地聚类主键并添加你使用代码的foregin键

 .ForeignKey("UserAccounts", t => t.UserAccountID, cascadeDelete: true)

Answer 1

MySQL的语法和支持略有不同，其他人试试这个。不要在表中使用多个主键

    CREATE TABLE LinkedAccountClaims(
UserAccountID int unique NOT NULL ,
ProviderName varchar(30) NOT NULL,
ProviderAccountID varchar(100) NOT NULL,
Type varchar(150) NOT NULL,
Value varchar(150) NOT NULL,
primary key (UserAccountID)
);

CREATE INDEX IX_UserAccountID ON LinkedAccountClaims
(UserAccountID);

ALTER TABLE LinkedAccountClaims ADD  CONSTRAINT FK_LinkedAccountClaims_UserAccounts_UserAccountID FOREIGN KEY(UserAccountID)
REFERENCES UserAccounts(ID)
ON DELETE CASCADE;

Answer 2

您是否考虑过使用Pentaho数据集成进行转换？

MSSQL到MySQL的迁移

2 个答案: