- 搜標(biāo)題
- 搜題干
- 搜選項
單項選擇題
列出EMP表中，從事每個工種（JOB）的員工人數(shù)（）
A.select job from emp;
B.select job,count(*) from emp;
C.select distinct job,count(*) from emp;
D.select job,count(*) from emp group by job;
E.select job,sum(empno) from emp group by job;
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