Correlated Subquery To Find Nth Highest Salary 34 If you want to find nth Salary from a table here n should be any thing like 1st or 2nd or 15th highest Salaries This is the Query for to find nth Salary SELECT DISTINCT Salary FROM tblemployee ORDER BY Salary DESC LIMIT 1 OFFSET n 1 If you want to find 8th highest salary query should be SELECT DISTINCT Salary FROM tblemployee ORDER
The easiest way to find nth maximum minimum salary is by using the correlated subquery but it s not the fastest way Better ways are database dependent e g you cause TOP keyword in SQL SERVER LIMIT keyword in MySQL and ROW NUMBER window function in Oracle to calculate the nth highest salary The normal subquery way is good for the second Here are different ways to calculate the Nth highest salary using plain SQL in different databases like Microsoft SQL Server MySQL Oracle and PostgreSQL 1 Using Correlated Subquery The linked or correlated subquery is one of the most typical techniques to tackle the challenge of determining the Nth highest wage from the Employee table
Correlated Subquery To Find Nth Highest Salary
Correlated Subquery To Find Nth Highest Salary
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How to find Nth highest salary from a table - GeeksforGeeks
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How to find Nth Highest Salary in SQL| How to find 2nd Highest Salary in SQL| SQL Interview Question - YouTube
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If you don t use distinct then it will return 3000 because there are two people with the same 3000 salary 2 Nth highest salary in SQL This is the extension of previous example of correlated subquery in SQL because you can replace 2 with any number to find the 3rd highest 4th highest 5th highest or Nth highest and lowest salary To find the Nth highest salary from a table there are several approaches you can use depending on the specific SQL database system you are using Using a correlated subquery SELECT salary FROM employees e1 WHERE N 1 SELECT COUNT DISTINCT e2 salary FROM employees e2 WHERE e2 salary e1 salary Choose the method that best fits your
First you can execute the subquery that returns the average salary of all employees independently SELECT AVG salary FROM employees Code language SQL Structured Query Language sql Second the database system needs to evaluate the subquery only once Third the outer query makes use of the result returned from the subquery 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
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SQL Query to find Nth highest salary of employee ? || SQL Query Interview Question - YouTube
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Query To Find Nth Highest Salary In SQL | SQL Interview Question - YouTube
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Find the nth highest salary from the employees table This correlated subquery counts distinct salaries in the employees table aliased as e2 that are greater than or equal to the salary of the current employee in the outer query aliased as e1 The result of this subquery is used to filter the outer query This code first selects some columns from the tables employee and department 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
Example 6 A SQL correlated subquery using NOT EXISTS EXISTS is an unary operator It has only one operand which is a subquery correlated or not If the subquery returns at least one record then EXISTS returns TRUE If the subquery returns no records EXISTS returns FALSE In this case you must use a correlated subquery to get your results The query is used to retrieve employees with the nth highest salary in the company It uses a subquery to count the number of distinct salaries greater than
How to find nth highest salary in SQL | SQL Interview Question - YouTube
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Multiple ways to find second highest salary in SQL
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Correlated Subquery To Find Nth Highest Salary - In this video I have covered the Top 3 ways to find nth Highest Salary which is a very commonly asked question in Job Interviews and Campus Placement Tests