题目内容
（请给出正确答案）
The advantage of employees having foreign language skills is that they can ______.
A．easily find new approaches to met market needs
B．easily make friends with businesspeople abroad
C．better control the whole negotiation process
D．fast-forward their proposals to headquarters
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更多“The advantage of employees hav…”相关的问题
A.select count(*) from emp
B.select avg(*) from emp
C.select min(*) from emp
D.select max(*) from emp
以下能够删除一列的是()
A.alter table emp remove addcolumn
B.alter table emp drop column addcolumn
C.alter table emp delete column addcolumn
D.alter table emp delete addcolumn
A.select ename,nvl（comm.,0）from emp
B.select ename,null（comm.,0）from emp
C.SELECT ename,NULLIF（comm,0）FROM emp
D.SELECT ename,DECODE（comm.,NULL,0）FROM emp
A.select count(all) from emp;
B.select count(emp_id) from emp;
C.select count(*) from emp;
D.select count(1) from emp;
如果对关系emp(eno, ename, salary)成功执行下而的SQL语句：
CREATE CLUSTER INDEX name_index ON emp(salary)
其结果是()。
A) 在emp表上按salary升序创建了一个聚簇索引
B) 在emp表上按salary降序创建了一个聚簇索引
C) 在emp表上按salary升序创建了一个惟一索引
D) 在emp表上按salary降序创建了一个惟一索引
A.TRUNCATE TABLE EMP
B.DELETE TABLE EMP
C.DELETE FROM EMP
D.DELETE * FROM EMP
A.SELECT ENAME FROM EMP WHERE MGR=NULL;
B.SELECT ENAME FROM EMP WHERE MGR IS NULL;
C.SELECT ENAME FROM EMP WHERE MGR=0;
D.SELECT ENAME FROM EMP WHERE MGR=’’;
A.lter table emp remove address
B.lter table emp drop column address
C.lter table emp delete column address
D.lter table emp delete address
A.select deptno, max（salary） from emp group by deptn
B.select job, max（salary） from emp group by job having max（salary）>10000
C.select job, max（salary） from emp order by job
D.select job, max（salary） from emp group by salary having max（salary）>10000
