sales persons should always receive commission of 100 at least. employees who r not sales persons should never receive commission.(Triggers)

1 Answers   Fidelity, Oracle,

---

What are the types of records?

0 Answers  

---

what is difference between procedure and function

10 Answers   MCN Solutions, Wipro,

---

What is a primary key, and how is it different from a unique key?

3 Answers  

---

what is top in tsql? : Transact sql

0 Answers  

---

Can we write dml inside a function in sql server?

0 Answers  

---

What is java sql connection?

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  

---

i don't want the message as 14 rows updated just it should update what it will do

4 Answers  

---

What is the use of non clustered index?

0 Answers  

---

write an sql query to find names of employee start with 'a'? : Sql dba

0 Answers  

---

how to escape special characters in sql statements? : Sql dba

0 Answers  

---