题解 | #汇总各个部门当前员工的title类型的分配数目#
汇总各个部门当前员工的title类型的分配数目
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select departments.dept_no,dept_name,title ,count(*) from departments join dept_emp on departments.dept_no = dept_emp.dept_no join titles on dept_emp.emp_no = titles.emp_no GROUP BY departments.dept_no, departments.dept_name, titles.title ORDER BY departments.dept_no ASC, titles.title ASC;