题解 | #统计各个部门的工资记录数#
统计各个部门的工资记录数
https://www.nowcoder.com/practice/6a62b6c0a7324350a6d9959fa7c21db3
select d2.dept_no, dept_name, sum from (select dept_no, count(*) sum from salaries s left join dept_emp d1 on s.emp_no = d1.emp_no group by dept_no) d2 left join departments d3 on d2.dept_no = d3.dept_no order by dept_no asc;
投递美团等公司10个岗位 >
