How much does sql cost?

0 Answers  

---

How do you drop a trigger?

0 Answers  

---

I have 2 Databases. How can create a table in particular database? How can i know the list of tables presented each database?( in oracle 10g)

5 Answers   Relq,

---

what is single byte over head in oracle..?

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 is trigger in sql and its types?

0 Answers  

---

select top 3 sal from each dept?

17 Answers   IBM, TCS,

---

How many sql commands are there?

0 Answers  

---

What is a file delimiter?

0 Answers  

---

Why triggers are used?

0 Answers  

---

how to get @@error and @@rowcount at the same time? : Sql dba

0 Answers  

---

what are the differences between public, private, protected, static, transient, final and volatile? : Sql dba

0 Answers  

---