题解 | #获取所有非manager的员工emp_no#
获取所有非manager的员工emp_no
https://www.nowcoder.com/practice/32c53d06443346f4a2f2ca733c19660c
select
employees.emp_no
from
employees
left join dept_manager on employees.emp_no = dept_manager.emp_no
where dept_manager.dept_no is null
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