3rd Highest Salary In Sql Without Window Function What Is the Task Here Let s find the third highest salary by department This means finding the third highest value not overall but within each subset where a subset has the salaries for a given department The most helpful tool for doing this is the window functions So here s the first solution using a window function Using NTH VALUE
Here is a way to do this task using the dense rank function Consider the following table Employee CREATE TABLE CREATE TABLE emp emp name VARCHAR 50 emp salary DECIMAL 10 2 Let s insert some random data with a random name and then we will look at how to calculate the nth highest emp salary Query CREATE TABLE emp 4 Using NTH VALUE to Find the Third Highest Salary NTH VALUE is a robust SQL window function that makes finding the nth highest value in a particular dataset easy In our case we will use it to find the third highest salary by department Here s how we can use NTH VALUE to find the third highest salary for a given department
3rd Highest Salary In Sql Without Window Function
3rd Highest Salary In Sql Without Window Function
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Using the dense rank function in SQL is a powerful way to quickly find the highest or lowest values in a table By following the steps outlined in this article you can easily find the 3rd highest salary in your dataset and gain valuable insights into your data The highest salary indicates that no other income is higher than it the second highest indicates that just one salary is higher than it the third highest indicates that two salaries are higher than it and the Nth highest salary indicates that N 1 salaries are higher than it 2
3rd highest salary SELECT name salary FROM Employee e1 WHERE 3 1 SELECT COUNT DISTINCT salary FROM Employee e2 WHERE e2 salary e1 salary Result name salary John 4000 Explanation The distinct keyword is there to deal with duplicate salaries in the table To use NTH VALUE we have to specify the column and the value of N Since we want to get the third highest salary the column is salary and N 3 hence we have NTH VALUE salary 3 This will get us the third highest salary For a window function to work we need to use an OVER clause
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We will use the following techniques to query for the Nth highest salary Using the LIMIT clause Using DENSE RANK function Using ROW NUMBER function Using RANK function Before we start let s create a simple table of employees with their names and the corresponding salary using the below SQL statement CREATE TABLE employee If we want to see the third highest salary the subquery would return Salary 80 000 72 000 50 000 The outer query then selects the first salary from the subquery except we re sorting it ascending this time which sorts from smallest to largest so 50 000 would be the first record sorted ascending
To select 3rd highest salary in SQL you can use the LIMIT clause in combination with the ORDER BY clause SELECT DISTINCT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2 We are assuming you have a table named employees with a column named salary that stores the salary information We use the ORDER BY clause to sort the salaries in descending order DESC so the highest salary Hi In this video we ve discussed the query to find nth highest salary in each department in SQL This is an important SQL query to master for SQL Interviews
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3rd Highest Salary In Sql Without Window Function - The highest salary indicates that no other income is higher than it the second highest indicates that just one salary is higher than it the third highest indicates that two salaries are higher than it and the Nth highest salary indicates that N 1 salaries are higher than it 2