Answer Posted / mallinathabj

The Following queries to retrieve the second highest salary

SQL> select max(sal) from emp where sal<(select
max(distinct(sal)) from emp);

SQL> select min(sal) from(select distinct( sal) from emp order
by sal desc) where rownum<=2;

SQL> SELECT MAX(SAL) FROM EMP WHERE SAL NOT IN (SELECT
MAX(SAL) FROM EMP);

Which join is like inner join?

555

---

What are the most important characteristics of pl/sql?

566

---

what are all the different types of indexes? : Sql dba

522

---

Can I copy :old and :new pseudo-records in/to an oracle stored procedure?

658

---

Explain isolation levels. : Transact sql

571

---

---

what are date and time intervals? : Sql dba

558

---

Table A Table B 1 1 2 1 3 1. Union & union all --> A Union B , A Union all B 2. Minus , Intersect --> A minus B , B Minus A , A Intersect B 3. Joins A join B , A Left Join B A Right Join B , A full Join B 4. %Type - Uses & Benifit 5. Truncate & Delete 6. Pragma Autonomus Transaction 7. how to Perform DDL from function or procedure 8. Can we have DML inside Function 9. Rank & Dense Rank diffrence 10. Water Mark in Oracle 11. Index , Can we have index in all column of table if no then why ?

528

---

How to fetch alternate records from a table?

673

---

What is the benefit of foreign key?

522

---

What is clustered index in sql?

580

---

Which type of cursor is used to execute the dml statement?

522

---

What is native sql query?

542

---

Can we change the table name in sql?

527

---

Can %notfound return null after a fetch?

579

---

What is faster join or subquery?

503

---