题解 | #查找所有员工的last_name和first_n
查找所有员工的last_name和first_name以及对应部门编号dept_no
https://www.nowcoder.com/practice/dbfafafb2ee2482aa390645abd4463bf
select e.last_name , e.first_name , d.dept_no from employees as e left join dept_emp as d on e.emp_no = d.emp_no
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