题解 | #查找所有员工的last_name和first_name以及对应部门编号dept_no#
获取所有非manager的员工emp_no
http://www.nowcoder.com/practice/32c53d06443346f4a2f2ca733c19660c
select emp_no from employees a where a.emp_no not in(select emp_no from dept_manager);
获取所有非manager的员工emp_no
http://www.nowcoder.com/practice/32c53d06443346f4a2f2ca733c19660c
select emp_no from employees a where a.emp_no not in(select emp_no from dept_manager);
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