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Answers for Basic SELECT with Conditions

Answers on Basic SELECT statement with Conditions:


1. SQL> SELECT * FROM emp WHERE ename LIKE 'S%';

2. SQL> SELECT * FROM emp WHERE ename LIKE '_L%';

3. SQL> SELECT * FROM emp WHERE ename LIKE '%E_';

4. SQL> SELECT * FROM emp WHERE ename LIKE '____';

5. SQL> SELECT * FROM emp WHERE ename LIKE '%L%';

6. SQL> SELECT * FROM emp WHERE ename LIKE '_____%';

7. SQL> SELECT * FROM emp WHERE sal BETWEEN 2000 and 3000;

9. SQL> SELECT * FROM emp WHERE mgr IS NULL OR COMM IS NULL;

10. SQL> SELECT * FROM emp WHERE mgr IS NULL AND COMM IS NULL;

11. SQL> SELECT * from emp WHERE job = 'MANAGER';

12. SQL> SELECT * from emp WHERE job = 'MANAGER' and deptno in (10,20);

13. SQL> SELECT * FROM emp WHERE job IN ('CLERK','ANALYST') AND sal >= 1000 AND deptno IN (20,30);

14. SQL> SELECT * FROM emp where deptno in (20,30) and comm IS NULL;

15. SQL> SELECT * FROM emp WHERE ename LIKE ('A%') OR ename LIKE ('S%');

16. SQL>SELECT * FROM emp WHERE ename NOT LIKE ('%S') AND deptno IN (20,30);

17. SQL> SELECT * FROM emp where comm IS NOT NULL AND sal > 1500 AND deptno = 30;

18. SQL> SELECT * FROM emp where comm IS NOT NULL AND sal > 1500 AND job = 'MANAGER'
 
19. SQL> SELECT * FROM emp WHERE job = 'MANAGER' OR job = 'CLERK' AND sal >=2000 AND deptno NOT IN (10,20);

20. SQL> SELECT * FROM emp WHERE COMM IS NOT NULL;

21. SQL> SELECT * from emp WHERE sal NOT BETWEEN 2000 AND 3000 AND job LIKE ('%MAN%');

Comments

Payal Prajapati said…
Hello Sir,
In ans 15 the condition is dat deptno should be 20 along wid the other conditions.
Payal Prajapati said…
This comment has been removed by the author.
jamal basha said…
19. List emp working as managers and clerks with Salary atleast 2000 except in dept 10 and 20

SQL> SELECT * FROM emp WHERE job = 'MANAGER' OR job = 'CLERK' AND sal >=2000 AND deptno NOT IN (10,20);

The above ans returns the records who are working in department 10,20,30. but the question is not
to display the employees who are working in department 10 and 20.

for this the ans is:

SQL> SELECT * FROM emp WHERE (job = 'MANAGER' OR job = 'CLERK') AND sal >=2000 AND deptno NOT IN (10,20);

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Answers for SUB Queries

1. SQL> select empno, ename from emp where deptno=(select deptno from dept where dname='RESEARCH');


2. SQL> select empno, ename from emp where deptno in (select deptno from dept where loc in ('NEW YORK','CHICAGO'));

3. SQL> select dname from dept where deptno in ( select deptno from emp where job ='ANALYST');

4. SQL> select empno, ename, mgr from emp where mgr = (select empno from emp where ename='JONES');

5. SQL> select empno, ename, mgr from emp where mgr = (select mgr from emp where ename='JONES')

6. SQL> select empno, ename, job from emp where deptno in ( select deptno from dept where dname in ('SALES','ACCOUNTING'))

7. SQL> select empno, ename, job from emp where deptno in ( select deptno from dept where dname in ('SALES','RESEARCH')) and empno in (select mgr from emp)

8. SQL> select empno, ename from emp where empno not in ( select mgr from emp where mgr is not null)

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