Find The Nth Highest Salary In SQL Server 2017

Introduction

 

In this article, I am going to explain to you how to find nth highest salary in various ways. This is one of the most common questions asked in an interview in SQL.

 

Below are several ways of finding the Nth Highest Salary.

1. How to find nth highest salary in SQL Server using a Sub-Query
2. How to find nth highest salary in SQL Server using a CTE
3. How to find the 2nd, 3rd or 5th highest salary

Here we will be using SQL Server 2017, or else you can use SQL Server 2008 or above.

 

Read my previous Joins in SQL Server 2017 as a part of this article using the below links before reading this article:

• Joins In SQL Server 2017
• Self Join In SQL Server 2017
• Advanced Joins In SQL Server 2017
• Joining Three Or More Tables In SQL Server 2017
• Difference Between Union & Union All In SQL Server 2017

Prerequisites

 

SQL Server 2017 or you can use SQL server 2008 or above version.

 

First, we will create a Database and a table.

 

Creating Database and One Table

 

Step 1 - Create a Database

 

Open your SQL Server and use the following script to create the “chittadb” Database.

Create database chittadb

Now, select the script query then press F5 or click on the Execute button to execute the above script.

 

You should see a message, “Command(s) completed successfully.” This means your new database has been created.

 

Step 2 - Create a table

 

Open your SQL Server and use the following script to create s table “tbl_Employees”.

Create table tbl_Employees
(
     Id int primary key not null identity(1,1),
     FirstName varchar(50),
     LastName varchar(20),
     Location varchar(20),
     Gender varchar(50),
     Salary int
)

Execute the above query to create “tbl_Employees “.

 

You should see a message, “Command(s) completed successfully.”

 

Now, data is inserted into the table.

Insert into tbl_Employees values ('Chittaranjan', 'Swain','Odisha', 'Male', 80000)
Insert into tbl_Employees values ('Chandin', 'Swain', 'Pune','Female', 76000)
Insert into tbl_Employees values ('Mitu', 'Pradhan','Delhi', 'Male', 55000)
Insert into tbl_Employees values ('Jeni', 'Swain','Chennai', 'Female', 76000)
Insert into tbl_Employees values ('Adyashree', 'Swain','UK', 'Female', 49000)
Insert into tbl_Employees values ('Ram', 'Kumar','US', 'Male', 39000)
Insert into tbl_Employees values ('Jitendra', 'Gouad','Hydrabad', 'Male', 35000)
Insert into tbl_Employees values ('Dibas', 'Hembram','Bangalore', 'Male', 55000)

Execute the above query, you should see a message, “Command(s) completed successfully.”

 

Now retrieve all data from “tbl_Employees” table.

select * from tbl_Employees

output

 

 

To Find the Highest Salary

 

We can simply use the Max() function as shown below.

Select Max(Salary) as Salary from tbl_Employees

OutPut

 

 

To Find the Lowest Salary

 

We can simply use the MIN() function as shown below.

Select MIN(Salary) as Salary from tbl_Employees

OutPut

 

 

To Find Nth Highest Salary Using A Sub-Query

SELECT TOP 1 SALARY
FROM (
      SELECT DISTINCT TOP 1 SALARY
      FROM tbl_Employees
      ORDER BY SALARY DESC
      ) RESULT
ORDER BY SALARY

Output

 

To Find The Nth Highest Salary Using CTE

WITH RESULT AS
(
    SELECT SALARY,
           DENSE_RANK() OVER (ORDER BY SALARY DESC) AS DENSERANK
    FROM tbl_Employees
)
SELECT TOP 1 SALARY
FROM RESULT
WHERE DENSERANK = 1

Output

 

 

To Find The Second Highest Salary

select distinct top 2 salary from tbl_Employees order by Salary desc

Output

 

 

To find the second highest salary Using a Sub-Query,

 

To get the second highest salary, use a Subquery along with the Max() function

Select Max(Salary) as Salary from tbl_Employees where Salary <(select MAX(Salary) from tbl_Employees)

Output

 

 

To Find the Second Highest Salary Using a Sub-Query

SELECT TOP 1 SALARY
FROM (
      SELECT DISTINCT TOP 2 SALARY
      FROM tbl_Employees
      ORDER BY SALARY DESC
      ) RESULT
ORDER BY SALARY

Output

 

To Find Second Highest Salary Using CTE

WITH RESULT AS
(
    SELECT SALARY,
           DENSE_RANK() OVER (ORDER BY SALARY DESC) AS DENSERANK
    FROM tbl_Employees
)
SELECT TOP 1 SALARY
FROM RESULT
WHERE DENSERANK = 2

Output

 

 

To Find the Third Highest Salary

select distinct top 3 salary from tbl_Employees order by Salary desc

Output

 

 

To Find the Third Highest Salary Using a Sub-Query,

SELECT TOP 1 SALARY
FROM (
      SELECT DISTINCT TOP 3 SALARY
      FROM tbl_Employees
      ORDER BY SALARY DESC
      ) RESULT
ORDER BY SALARY

Output

 

To Find the Third Highest Salary Using CTE

WITH RESULT AS
(
    SELECT SALARY,
           DENSE_RANK() OVER (ORDER BY SALARY DESC) AS DENSERANK
    FROM tbl_Employees
)
SELECT TOP 1 SALARY
FROM RESULT
WHERE DENSERANK = 3

Output

 

 

Similarly, to find the 5th highest salary simply replace N with 5. 

 

Conclusion

 

In this article, I explained how to find nth highest salary with several ways in SQL Server with examples. I hope this article has helped you to understand this topic. Post your valuable feedback in the comments section.