Human Resource Schema Of Oracle10g The following is the structure of the tables provided by Oracle in Human Resource Schema Sch ema (HR).
ke y(s). Note: Columns in RED color indicate primary key(s).
Queries The following are queries and answers related to the above tables. Display employees who joined in 2000 and doing job that has maximum salary more than 10000. select first_name,job_id,salary, hire_date from employees where to_char(hire_date,'yyyy') = 2000 and job_id in ( select job_id from jobs where max_salary > 10000)
Display departments where the name of the manager is MICHAEL. select * from departments where manager_id in (select employee_id from employees where upper(first_name) like '%MICHAEL%')
Display jobs where the minimum salary is less than salary of employee 1 05. select * from jobs where min_salary < (select salary from employees where employee_id = 105)
Display employees who have underscore in their email address select * from employees where email like '%\_%' ESCAPE '\'
Display employee name and manager name of the employee. select e1.first_name Employee, e2.first_name Manager from employees e1, employees e2 where e1.manager_id = e2.employee_id
Display number of employees joined in each year into department 30. select to_char(hire_date,'yyyy') , count(*) from employees where department_id = 30 group by to_char(hire_date,'yyyy');
Display job id, department id and sum of salary by including al possible dimensions. select department_id department, job_id job, sum(salary) TotalSalary from employees group by cube( department_id, job_id) order by department_id, job_id;
Display employee name and job title of jobs where salary of employee is between minimum and maximum salary for job.
select first_name, job_title from employees e, jobs j where salary between min_salary and max_salary order by first_name;
Display how many employees have commission percentage and how many do not have. select
count(commission_pct) NoEmployeesWithCommissio n, count(*) - count(commission_pct) NoEmployeesWithoutCommssion from employees
Display first name, job title, department name of employees who joined on 28th Feb. select first_name, job_title, department_name from employees e, jobs j, departments d where e.job_id = j.job_id and e.department_id = d.department_id and to_char(hire_date,'ddmm') = '2802';
If you have any other queries, please send them to my email at
[email protected], I will try to add them to the above list.
