摘要: 1、聚合函数 --(1)求员工的总人数 select count(*) from People --(2)求最大值,最高工资 select max(PeopleSalary) from People --(3)求最小值,最低工资 select min(PeopleSalary) from Peopl 阅读全文
posted @ 2023-03-27 21:45 春哥博客 阅读(37) 评论(0) 推荐(0)