多做题,通过考试没问题!

Oracle认证考试

题库首页>其他计算机考试>Oracle认证考试

Click the Exhibit button and examine the data in the EMPLOYEES and DEPARTMENTS tables. You want to retrieve all employees, whether or not they have matching departments in the departments table. Which query would you use?()

  • A、SELECT last_name, department_name FROM employees NATURAL JOIN departments;
  • B、SELECT last_name, department_name FROM employees JOIN departments ;
  • C、SELECT last_name, department_name FROM employees e JOIN departments d ON (e.department_id = d.department_id);
  • D、SELECT last_name, department_name FROM employees e RIGHT OUTER JOIN departments d ON (e.department_id = d.department_id); 
  • E、SELECT last_name, department_name FROM employees FULL JOIN departments ON (e.department_id = d.department_id);
  • F、SELECT last_name, department_name FROM employees e LEFT OUTER JOIN departments d ON (e.department_id = d.department_id);
查看答案

微信扫一扫手机做题