PostgreSQL Subquery: Find the 5th maximum salary of all salaries

15. Write a subquery to find the 5th maximum salary of all salaries.

Sample Solution:

Code:

SELECT DISTINCT salary 
FROM employees e1 
WHERE 5 = (SELECT COUNT(DISTINCT salary) 
FROM employees  e2 
WHERE e1.salary <= e2.salary); 

Sample table: employees

Output:

pg_exercises=# SELECT DISTINCT salary
pg_exercises-# FROM employees e1
pg_exercises-# WHERE 5 = (SELECT COUNT(DISTINCT salary)
pg_exercises(# FROM employees  e2
pg_exercises(# WHERE e1.salary <= e2.salary);
  salary
----------
 13000.00
(1 row)

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