.NET and SQL Server interview questions – How will you obtain second highest salary from the table?

Answer:

Let’s us assume that we have the following table of Employee.

mp_Id Emp_Name Emp_Salary
1 Shiv 17000
2 Raju 13500
3 Sham 15000
4 Moosa 11000
5 Feroz 12000

Now we want to find out second highest salary from Employee table, as you see that the second highest salary is 15000 and we want to display the same.

Query:-

SELECT Emp_Name,Emp_Salary
FROM Employee e1
WHERE
2 = (SELECT COUNT(DISTINCT (e2.Emp_Salary))FROM Employee e2 WHERE e2.Emp_Salary >= e1.Emp_Salary)

The above employee table contains two same records as second highest salary so the result set will look like below output table.

Output:-

Emp_Name Emp_Salary
Sham 15000

If the table contains two or more same record of salary which is the second highest salary then the query will give you all the record of second highest salary as you see in the above output table.
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Regards,

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