1 List all information about the employees.
SELECT * FROM EMP_2014170165;
2 List all information about the departments
SELECT * FROM DEPT_2014170165;
3 List only the following information from the EMP table ( Employee name, employee number, salary, department number)
SELECT ENAME,EMPNO,SAL,DEPTNO FROM EMP_2014170165;
4 List details of employees in departments 10 and 30.
SELECT * FROM EMP_2014170165
WHERE DEPTNO = 10 OR DEPTNO = 30;
5 List all the jobs in the EMP table eliminating duplicates.
SELECT DISTINCT JOB FROM EMP_2014170165;
6. What are the names of the employees who earn less than £20,000?
SELECT ENAME FROM EMP_2014170165 WHERE SAL < 20000;
7. What is the name, job title and employee number of the person in department 20 who earns more than £25000?
SELECT ENAME,JOB,EMPNO FROM EMP_2014170165
WHERE DEPTNO=20 AND SAL > 25000;
8. Find all employees whose job is either Clerk or Salesman.
SELECT * FROM EMP_2014170165
WHERE JOB = 'CLERK' OR JOB = 'SALESMAN'
9. Find any Clerk who is not in department 10.
SELECT * FROM EMP_2014170165
WHERE DEPTNO=20 AND SAL > 25000;
10. Find everyone whose job is Salesman and all the Analysts in department 20.
SELECT * FROM EMP_2014170165
WHERE JOB = 'SALESMAN' OR
(JOB = 'ANALYST' AND DEPTNO = 20);
11. Find all the employees who earn between £15,000 and £20,000.
Show the employee name, department and salary.
SELECT ENAME,DEPTNO,SAL FROM EMP_2014170165
WHERE SAL BETWEEN 15000 AND 20000;
12 Find the name of the President.
SELECT ENAME FROM EMP_2014170165
WHERE JOB = 'PRESIDENT';
13 Find all the employees whose last names end with S
SELECT * FROM EMP_2014170165
WHERE ENAME LIKE '%S';
14 List the employees whose names have TH or LL in them
SELECT * FROM EMP_2014170165
WHERE ENAME LIKE '%TH%' OR ENAME LIKE '%LL%';
15 List only those employees who receive commission.
SELECT * FROM EMP_2014170165
WHERE COMM IS NOT NULL;
16 Find the name, job, salary, hiredate, and department number of all employees by alphabetical order of name.
SELECT ENAME,JOB,SAL,HIREDATE,DEPTNO
FROM EMP_2014170165
ORDER BY ENAME;
17. Find the name, job, salary, hiredate and department number of all employees in ascending order by their salaries.
SELECT ENAME,JOB,SAL,HIREDATE,DEPTNO
FROM EMP_2014170165
ORDER BY SAL DESC;
18. List all salesmen in descending order by commission divided by their salary.
SELECT * FROM EMP_2014170165
ORDER BY nvl(COMM, 0)/SAL DESC;
19. Order employees in department 30 who receive commision, in ascending order by commission
SELECT * FROM EMP_2014170165
WHERE DEPTNO=30 AND COMM IS NOT NULL
ORDER BY COMM DESC;
20 Find the names, jobs, salaries and commissions of all employees who do not have managers.
SELECT ENAME,JOB,SAL,COMM FROM EMP_2014170165
WHERE MGR IS NULL;
21 Find all the salesmen in department 30 who have a salary greater than or equal to £18000.
SELECT * FROM EMP_2014170165
WHERE DEPTNO=30 AND JOB = 'SALESMAN' AND SAL >= 18000;
22 Find the employees who were hired before 01-Jan-1998 and have salary above 5000 or below 1000.
SELECT * FROM EMP_2014170165
WHERE HIREDATE < '01-1月-1998'
AND (SAL > 5000 OR SAL<1000);
23 What is the command to add primary key constraint to EMPNO
ALTER TABLE EMP_2014170165 ADD PRIMARY KEY(EMPNO);
24 What is the command to add a new column EMP_family_name to existing EMP table
ALTER TABLE EMP_2014170165
ADD EMP_family_name VARCHAR2(10);
25 How to drop primary key constraint for EMPNO
ALTER TABLE EMP_2014170165
DROP PRIMARY KEY;
26 rename EMP table to EMPLOYEE
RENAME EMP_2014170165
TO EMPLOYEE_2014170165;
27 rename EMPLOYEE back to EMP
RENAME EMPLOYEE_2014170165
TO EMP_2014170165;
28 What is the SQL command to remove column EMP_family_name from EMP table
ALTER TABLE EMP_2014170165
DROP COLUMN EMP_family_name;
29 What is the SQL command to copy emp table to employee table
CREATE TABLE EMPLOYEE_2014170165 AS
SELECT * FROM EMP_2014170165;
30 What is the SQL command to drop employee table
DROP TABLE EMPLOYEE_2014170165;
31 What is the SQL command to display name’s of employee entered interactively from user
SELECT * FROM EMP_2014170165
WHERE ENAME = '&ENTER';
32 What is the SQL command to find the employee whose commission is NULL
SELECT * FROM EMP_2014170165 WHERE COMM IS NULL;