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Display alternate rows of EMP table


Displaying alternate rows of EMP table,


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Sanjay kumar.p said…
hi sir, i am your student and now i am in Chennai i want to know what is padding, right padding and left padding and its use
March 5, 2016 at 6:36 PM
usha said…
Hello Sir,
How do we order a table by two column names? for eg: order by sal desc and ename asc...
April 23, 2016 at 11:29 PM
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SQL Interview Questions on Subqueries

SUB Queries:
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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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