some one help me to find out nth highest salary from the salary table in MYSQL
some one help me to find out nth highest salary from the salary table in MYSQL
Here we can create the MYSQL function for this. nth highest salary from the Employee table.
+----+--------+
| Id | Salary |
+----+--------+
| 1 | 100 |
| 2 | 200 |
| 3 | 300 |
+----+--------+
For 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.
CREATE FUNCTION getNthHighestSalary(N INT) RETURNS INT
BEGIN
DECLARE limitv INT;
SET limitv = N - 1;
RETURN (
Select IFNULL(
(select Distinct Salary from Employee order by Salary Desc limit limitv, 1),
NULL
) as getNthHighestSalary
);
END
+-------+--------+
| name | salary |
+-------+--------+
| A | 100 |
| B | 200 |
| C | 300 |
| D | 400 |
| E | 500 |
| F | 500 |
| G | 600 |
+-------+--------+
IF YOU WANT TO SELECT ONLY Nth HIGHEST SALARY THEN:
SELECT DISTINCT salary FROM emp ORDER BY salary DESC LIMIT 1 OFFSET N-1;
IF YOU WANT TO SELECT ALL EMPLOYEE WHO GETTING Nth HIGHEST SALARY THEN:
SELECT * FROM emp WHERE salary = (
SELECT DISTINCT salary FROM emp ORDER BY salary DESC LIMIT 1 OFFSET N-1
);
MySQL query to find Nth highest salary from a salary table(100% true)
SELECT Salary FROM Employee ORDER BY Salary DESC LIMIT N-1,1;
To get 2nd highest salary:
SELECT salary
FROM [employees]
ORDER BY salary DESC
offset 1 rows
FETCH next 1 rows only
To get Nth highest salary:
SELECT salary
FROM [employees]
ORDER BY salary DESC
offset **n-1** rows
FETCH next 1 rows only
Try this solution.
select SUBSTRING_INDEX(SUBSTRING_INDEX(GROUP_CONCAT(DISTINCT salary ORDER BY salary DESC),',',3),',',-1) from employees
Let there be table salaries containing
+----------+--------+--------+
| emp | salary | deptno |
+----------+--------+--------+
| ep1 | 10 | dp1 |
| ep2 | 20 | dp2 |
| ep3 | 30 | dp2 |
| ep4 | 40 | dp1 |
| ep5 | 50 | dp1 |
| ep6 | 60 | dp3 |
| ep7 | 70 | dp3 |
+----------+--------+--------+
By Nested Queries: (where you can change offset 0/1/2... for first, second and third... place respectively)
select
*
from
salaries as t1
where
t1.salary = (select
salary
from
salaries
where
salaries.deptno = t1.deptno ORDER by salary desc limit 1 offset 1);
or might be by creating rank: (where you can change rank= 1/2/3... for first, second and third... place respectively)
SET @prev_value = NULL;
SET @rank_count = 0;
select * from
(SELECT
s.*,
CASE
WHEN @prev_value = deptno THEN @rank_count := @rank_count + 1
WHEN @prev_value := deptno THEN @rank_count := 1
ELSE @rank_count := 1
END as rank
FROM salaries s
ORDER BY deptno, salary desc) as t
having t.rank = 2;
I have used Procedure for this query
here getHighestSalary procedure, reports the nth highest salary from the Employee table. If there is no nth highest salary, the query should report null.
first, create table
CREATE TABLE employee (
id INT AUTO_INCREMENT,
salary INT,
PRIMARY KEY (id) );
next, create PROCEDURE
DELIMITER //
CREATE PROCEDURE getHighestSalary(emp_id int)
BEGIN
select ifnull((select salary from employee where id = emp_id order by salary desc), null) as getNthHighestSalary;
END //
DELIMITER ;
and last, call the getHighestSalary procedure with n value
call getHighestSalary(2); -- 200