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 a.dept_no,a.dept_name,count(a.dept_name) as sum from departments as a,dept_emp as b,salaries as c where a.dept_no=b.dept_no and b.emp_no=c.emp_no group by dept_no,dept_name order by dept_no
投递联想等公司10个岗位 >