How To Find Nth Highest Salary In Oracle Sql One of the most common SQL interview questions is to find the Nth highest salary of employees where N could be 2 3 4 or anything e g find the second highest salary in SQL Sometimes this question is also twisted as to find the nth minimum salary in SQL Since many Programmers only know the easy way to solve this problem e g by using SQL IN clause which doesn t scale well they struggle to
In this approach we employ a self join to find the second highest salary The first SELECT statement retrieves the maximum salary using the MAX aggregate function aliasing it as second highest salary from the employees e1 table where e1 serves as an alias for the employees table Finding Nth highest salary in a table is the most common question asked in interviews Here is a way to do this task using the dense rank function Oracle and Microsoft SQL Server In this article we will demonstrate how to use SQL to find the highest salary in each department This i
How To Find Nth Highest Salary In Oracle Sql
How To Find Nth Highest Salary In Oracle Sql
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SELECT e first name e last name d department name salary NTH VALUE salary 3 OVER PARTITION BY department name ORDER BY salary DESC RANGE BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING AS third highest salary FROM department d JOIN employee e ON d id e department id So we can use this SQL in Oracle to find the nth highest salary using the RANK function select FROM select EmployeeID Salary rank over order by Salary DESC ranking from Employee WHERE ranking N The rank function will assign a ranking to each row starting from 1 This query is actually quite similar to the one where we used the
What if we try to exclude the highest salary value from the result set returned by the SQL If we remove the highest salary from a group of salary values then we will have a new group of values whose highest salary is actually the 2nd highest in the original table a Set of people earning the Nth highest salary with continuous ranks if there are ties OR b Set of people earning the Nth highest salary with skipped rank numbers if there are ties Then you can proceed to writing the queries Scenario 1 DENSE RANK for Nth highest row no gaps in case of ties
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How To Find Nth Highest Salary In Sql
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How To Find Nth Second Highest And Lowest Salary In SQL Sujit s Blogs
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SQL Query To Find Nth Highest Salary
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This article talks about this question in depth and I will quote code from it below Solution 1 This SQL to find the Nth highest salary should work in SQL Server MySQL DB2 Oracle Teradata and almost any other RDBMS note low performance because of subquery SELECT This is the outer query part FROM Employee Emp1 WHERE N 1 Subquery starts here SELECT COUNT DISTINCT Find the nth highest salary in SQL without a subquery Find the nth highest salary in Oracle using RANK Oraclealso provides a RANK function that just assigns a ranking numeric value with 1being the highest for some sorted values So we can use this SQL in Oracle tofind the nth highest salary using the RANK function
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SQL Query To Find Nth Highest Salary
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