考试
2021-02-25 12:23:41

(单选题)列出EMP表中,从事每个工种(JOB)的员工人数(

题目描述

Aselect job from emp;

Bselect job,count(*) from emp;

Cselect distinct job,count(*) from emp;

Dselect job,count(*) from emp group by job;

Eselect job,sum(empno) from emp group by job;

答案解析

[db:答案解析]

D

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