数据库题——高于部门平均工资查询问题

题目：找出高于所在部门平均工资的员工的姓名，工资，所在部门的编号。部门的平均工资

SELECT AVG(salary) avg_salary ,depart_id FROM sqltest GROUP BY depart_id

SELECT sqltest.name,sqltest.salary,temp_table.depart_id,temp_table.avg_salary
FROM sqltest,(SELECT AVG(salary) avg_salary ,depart_id FROM sqltest GROUP BY depart_id) temp_table
WHERE sqltest.depart_id = temp_table.depart_id and sqltest.salary > temp_table.avg_salary;