How to trace the errors in pl/sql block code?

5 Answers   TCS,

---

What is sql not null constraint?

0 Answers  

---

Hi Everyone, How to get fist and last record from a table in oracle? Thanks in advance

13 Answers   IBM,

---

Why you are not able to create a table using select command,if it is having a LONG column? for eg:create table test as select * from test1 here test1 containg a column having LONG datatype...

1 Answers  

---

How to use boolean type in select statement?

0 Answers  

---

What is sql query optimization?

0 Answers  

---

Can pl sql procedure have a return statement?

0 Answers  

---

how to check the 3rd max salary from an employee table? One of the queries used is as follows: select sal from emp a where 3=(select count(distinct(sal)) from emp b where a.sal<=b.sal). Here in the sub query "select count(distinct(sal)) from emp b where a.sal<=b.sal" or "select count(distinct(sal)) from emp b where a.sal=b.sal" should reveal the same number of rows is in't it? Can any one here please explain me how is this query working perfectly. However, there is another query to get the 3rd highest of salaries of employees that logic I can understand. Pls find the query below. "select min(salary) from emp where salary in(select distinct top 3 salary from emp order by salary desc)" Please explain me how "select sal from emp a where 3=(select count(distinct(sal)) from emp b where a.sal<=b.sal)" works source:http://www.allinterview.com/showanswers/33264.html. Thanks in advance Regards, Karthik.

4 Answers  

---

What are different methods to trace the pl/sql code?

0 Answers  

---

what is the difference between to_char and to_date functions?

10 Answers   Infosys,

---

What is schema in sql example?

0 Answers  

---

What is java sql package?

0 Answers  

---