mysql 創建 表 sql語句 帶主鍵和外鍵

本文示例使用 Birt 自帶的 Sample 數據源，用到的數據基於圖 1 所示的實體關係模型。從這個模型中可以看出，文中示例用到三張數據庫表分別爲 customers，orders 和 orderdetails。其中 customers 表的 customernumber 字段作爲外鍵出現在 orders 表中，而 orders 表的 ordernumber 字段做爲外鍵出現在 orderdetails 表中。

　

create TABLE Customers(customerNumber integer not null,
                                      customerName varchar(60),
                                        phone varchar(50),
                                        contactLastName varchar(30),
                                        contactFirstName varchar(30),
                                        addressLine1 varchar(50),
                                        addressLine2 varchar(50),city varchar(50),
                                        state varchar(30),
                                        postalCode varchar(15),
                                        country varchar(30),
                                        salesRepEmployeeNumber integer,
                                        creditLimit decimal(10,4),
                                        primary key(customerNumber)
) type=InnoDB;

--drop table orders;

create table orders(orderNumber integer not null,orderDate date,
requireDate date,shippedDate date,status1 varchar(20),
comments varchar(255),
cusNumber integer,
index cus(cusNumber),
primary key(orderNumber),
foreign key (cusNumber) references Customers(customerNumber)
) type=InnoDB;

create table OrderDetails (orderNum integer,
                          productCode integer,
                          quantityOrdered integer,
                          priceEach decimal(10,4),
                          orderLineNumber smallint,
                          index orderN(orderNum),
                          foreign KEY (orderNum) references orders(orderNumber)
                          )type=InnoDB;