Question

当我尝试创建表时，出现错误。

sql的表中不存在键列'department'。
外键（部门）参考部门（d_no）错误是此行

CREATE TABLE employee(
e_no INTEGER,
e_name VARCHAR(25),
city VARCHAR(25),
age INTEGER,
FOREIGN KEY(department) REFERENCES department(d_no)
);

Answer 1

您可以这样做

CREATE TABLE department (
    d_no INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY,
    d_name VARCHAR(50) NOT NULL UNIQUE
);

CREATE TABLE employee(
    e_no INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY,
    e_name VARCHAR(25) NOT NULL,
    city VARCHAR(25),
    age INTEGER NOT NULL,
    department INTEGER NOT NULL,
    FOREIGN KEY(department) REFERENCES department(d_no)
);

＃1072-表insql中不存在键列'department'

1 个答案: