MYSQL查询获取所有员工人数超过10的部门名称

Question

MYSQL查询获取所有员工人数均超过10的部门名称。

应该优化查询并且应该更快地执行。

Answer 1

SELECT dept.name, COUNT(employee.id) as empcount 
from dept INNER JOIN employee ON dept.id = employee.deptId 
GROUP BY dept.id 
HAVING empcount > 10;