SUBQUERIES: SINGLE ROW, MULTIPLE ROW, CORELATED SUBQUERY
69 programming challenges to help you master the fundamentals of DATABASE MANAGEMENT SYSTEM USING ORACLE.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose salary is greater than JONES.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning the same salary as SCOTT.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees hired after ALLEN.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees working in the same department as BLAKE.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees having the same job as MILLER.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning less than the average salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than the maximum salary of CLERKs.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employee(s) with the minimum salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employee(s) with the maximum salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees working in departments located in NEW YORK.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose salary matches any salary in department 30.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than all CLERKs.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning less than any MANAGER.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose job appears in department 20.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose department has at least one SALESMAN.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning the same salary as any CLERK.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees who are not working in departments of SALESMAN.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than all employees in department 10.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose department number is among departments with more than 3 employees.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose salary is greater than salary of their manager.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display jobs where average salary is greater than overall average salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than the department average salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning the highest salary in each department.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning the lowest salary in each job.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments having total salary greater than department 20.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose salary equals the maximum salary of their job.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than the overall average salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display department(s) having the maximum number of employees.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display jobs having minimum average salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than the average salary of CLERKs.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display department(s) where average salary is highest.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than the average salary of their own department.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning the maximum salary in their department.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning the minimum salary in their department.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose salary is greater than the average salary of their job.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees who are the only employee in their department.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments having employees earning more than 5000.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose department has more than 3 employees.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose job has more than 2 employees.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees working in departments where no one gets commission.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose department has at least one manager.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments that have employees.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments that have no employees.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees who are managers (have subordinates).
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees who are not managers.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees working in departments where SALESMAN exists.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments where no SALESMAN exists.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose department has employees with commission.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments where all employees get commission.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose department has no CLERKs.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees who work in departments located in CHICAGO.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display department number and average salary of employees whose salary is greater than 2000.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display job and total salary of employees earning more than the department average.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments having average salary greater than overall average salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display job-wise employee count from employees earning more than 1500.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments having more than 2 employees earning commission.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display job and maximum salary from employees hired after 1981.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display department-wise total salary excluding department 30.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments having total salary greater than overall total salary average.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display job-wise average salary where department has more than 3 employees.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display department and job having maximum total salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning the second highest salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than the average salary of departments located in DALLAS.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display departments where maximum salary equals minimum salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose salary is less than all MANAGERS but more than any CLERK.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose salary is equal to department-wise second highest salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning more than the median salary.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees whose salary is greater than 50% of employees.
EMP (EMPNO, ENAME, JOB, MGR, HIREDATE, SAL, COMM, DEPTNO)
DEPT (DEPTNO, DNAME, LOC)
Display employees earning the third highest salary.