oracle 查询测试样题

内容导读

互联网集市收集整理的这篇技术教程文章主要介绍了oracle 查询测试样题，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含2488字，纯文字阅读大概需要4分钟。

内容图文

1.
select count(*) from employees 
where last_name like '_A%';

key:0

2.
select count(*)
from employees
where to_char(hire_date,'YYYY')=1998;

select count(*)
from employees
where hire_date like '%98';

key:23

select to_char(hire_date,'YYYY') from employees;

3.
select job_title, max_salary-min_salary as "SAL_DIEF"
from jobs
order by max_salary-min_salary desc;

select job_title,(max_salary-min_salary) as "SAL_DIEF"
from jobs
order by 2 desc;

19行记录

4.
select count(*)
from employees
where (salary>12000 or salary<1000)
and job_id !='ST_MAN' and job_id!='SH_CLERK' ;


number:6

================
select count(*)
from employees
where salary not between 1000 and 12000
and job_id not in('ST_MAN','SH_CLERK') ;

select salary
from employees
where salary<1000 
and salary>12000;
--当它判断1000为假时就不判断后面的大于12000了.

select job_id from employees;

select * from employees
where job_id in('ST_MAN','SH_CLERK');
--工作岗位名称要加单引号


5.
select count(*)
from employees
where to_char(hire_date,'YYYY')=1999
and to_char(hire_date,'mm')=02;

key:3

select count(*)
from employees
where to_char(hire_date,'YYYY-MM')='1999-02';

6.

select last_name,salary,
decode(trunc(salary/1500),0,'A',
		   1,'B',
                   2,'C',
		     'D'	
) Grade
from employees
where last_name like'%s';


7.
select d.department_id,d.department_name,l.city
from departments d,locations l
where d.department_id in(10,40,90)
and d.location_id=l.location_id;


8.
select l.city,c.country_name,r.region_name
from locations l,regions r,countries c
where l.location_id=1000 
and l.country_id=c.country_id
and c.region_id=r.region_id;

9.
select  m.last_name "MAN_NAME",nvl(e.last_name,'NO EMPLOYEES') "EMP_NAME"
from employees m,employees e
where m.department_id=100
and m.employee_id=e.manager_id(+);

10行记录

select  m.last_name MAN_NAME,nvl(e.last_name,'NO EMPLOYEES') EMP_NAME
from employees m,employees e
where m.department_id=100
and m.employee_id=e.manager_id(+);

10
select department_id,count(*) NUM
from employees
where salary>8000
group by department_id
;
9行记录

11
select department_id,count(*) NUM
from employees
where salary>5000
group by department_id
having count(*)>3;

3行记录

12
select last_name,salary
from employees
where salary>
(select salary from employees where employee_id=110)
and department_id=100;

2行记录

13
select count(*) NUM
from employees
where commission_pct<all
(select distinct commission_pct 
from employees 
where salary>12000
and commission_pct is not null
);
24行记录

oracle 查询测试样题

标签：

本文系统来源：http://blog.csdn.net/hoho_12/article/details/51362928

内容总结

以上是互联网集市为您收集整理的oracle 查询测试样题全部内容，希望文章能够帮你解决oracle 查询测试样题所遇到的程序开发问题。 如果觉得互联网集市技术教程内容还不错，欢迎将互联网集市网站推荐给程序员好友。

内容备注

版权声明：本文内容由互联网用户自发贡献，该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请发送邮件至 gblab@vip.qq.com 举报，一经查实，本站将立刻删除。

内容手机端

---