Write a SQL query to get the nth highest salary from the Employee table.IdSalary110022003300For example, given the above Employee table, the nth highest salary where n = 2 is 200. If there is no nth highest salary, then the query should return null.getNthHighestSalary(2)200CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INTBEGINdeclare M INT;set M = N - 1;RETURN (# Write your MySQL query statement below.);ENDOptionsselect distinct Salary by Employeeorder by Salary desc limit 5 offsetselect distinct Salary from Employeeorder by Salary desc limit 1 offset Mselect distinct Employeeorder by Salary desc limit 1 offset Mselect distinct Salary from Employorder Salary desc limit 1 offset M
Question
Write a SQL query to get the nth highest salary from the Employee table.IdSalary110022003300For example, given the above Employee table, the nth highest salary where n = 2 is 200. If there is no nth highest salary, then the query should return null.getNthHighestSalary(2)200CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INTBEGINdeclare M INT;set M = N - 1;RETURN (# Write your MySQL query statement below.);ENDOptionsselect distinct Salary by Employeeorder by Salary desc limit 5 offsetselect distinct Salary from Employeeorder by Salary desc limit 1 offset Mselect distinct Employeeorder by Salary desc limit 1 offset Mselect distinct Salary from Employorder Salary desc limit 1 offset M
Solution
The correct SQL query to get the nth highest salary from the Employee table would be:
CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
BEGIN
declare M INT;
set M = N - 1;
RETURN (
# Write your MySQL query statement below.
select distinct Salary from Employee
order by Salary desc limit 1 offset M
);
END
This function first declares a variable M and sets it to N - 1. This is because the offset in SQL starts from 0, so we need to subtract 1 from N to get the correct nth highest salary.
Then it returns the salary from the Employee table, ordered in descending order, with a limit of 1 and an offset of M. The distinct keyword is used to ensure that each salary is unique. If there is no nth highest salary, the query will return null.
Similar Questions
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