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[单选题]
oracle 中,Sql 语句 select round(45.925,0),trunc(45.925) from dual;执行后,round(45.925,0)和 trunc(45.925)的结果分别是()
A.45,45
B.46,45
C.45,46
D.46,46
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
B、46,45
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.45,45
B.46,45
C.45,46
D.46,46
B、46,45
A.selectmax(job)fromt1groupbyjoborderbyjob
B.selectDISTINCTjobfromt1orderbyjob
C.selectuniquejobfromt1orderbyjob
D.selectmax(job)fromt1orderbyjob
E.selectjobfromt1orderbyempno
在Oracle中,关于PL/SQL下列描述正确的是()。
A.PL/SQL代表PowerLanguage/SQL
B.PL/SQL不支持面向对象编程
C.PL/SQL块包括声明部分、可执行部分和异常处理部分
D.PL/SQL提供的四种内置数据类型是character,integer,float,boolean