单选题
发布日期:2022-06-13
select job from emp;
select job,count(*) from emp;
select distinct job,count(*) from emp;
select job,count(*) from emp group by job;
select job,sum(empno) from emp group by job;
标签: "暂无标签"
题王网让考试变得更简单
扫码关注题王,更多免费功能准备上线!
此试题出现在