SQL84-实习广场投递简历分析（一）datediff()
牛客的课程订单分析(一)
http://www.nowcoder.com/practice/d3aa5df807f046bea5003dbc04965d67
select job, sum(num) as cnt from resume_info where left(date, 4) = 2025 group by job order by sum(num) desc;
或者时间限制写法改成：
datediff(date,"2025-10-15")>0
投递影石Insta360等公司6个岗位 >