2020-02-19 阅读量: 792
select driver_name,driver_phone
from driver_info left join driver_collect on driver_info.driver_id=driver_collect.driver_id
where d_year=2017 and d_month=7
group by driver_info.driver_id
having count(order_id)>30;
在第一节基础上 更新了函数和执行顺序：实操了字符数函数、时间函数、字段截取函数、interval函数等，除最后顺序实操因未导入数据库，导致无法执行
