mysql多表视图不重复匹配

CREATE TABLE employees (
    employee_id INT PRIMARY KEY,
    employee_name VARCHAR(100),
    department_id INT
);

CREATE TABLE departments (
    department_id INT PRIMARY KEY,
    department_name VARCHAR(100)
);

INSERT INTO employees (employee_id, employee_name, department_id) VALUES
(1, 'Alice', 1),
(2, 'Bob', 1),
(3, 'Charlie', 2);

INSERT INTO departments (department_id, department_name) VALUES
(1, 'HR'),
(2, 'Engineering');

CREATE VIEW employee_department_view AS
SELECT DISTINCT e.employee_name, d.department_name
FROM employees e
JOIN departments d ON e.department_id = d.department_id;