Wednesday, 25 November 2020

Select 2nd highest salary in sql

CREATE TABLE #Employee(Name VARCHAR(100), Salary money)

INSERT INTO #Employee(Name, Salary)VALUES('Ram',50000)
INSERT INTO #Employee(Name, Salary)VALUES('Shyam',40000)
INSERT INTO #Employee(Name, Salary)VALUES('Ghanshyam',40000)
INSERT INTO #Employee(Name, Salary)VALUES('Sita',30000)
INSERT INTO #Employee(Name, Salary)VALUES('Gita',20000)
INSERT INTO #Employee(Name, Salary)VALUES('Pranita',1000)
 
SELECT * FROM #Employee



 














--2nd highest
SELECT MAX(Salary) FROM #Employee WHERE Salary < (SELECT MAX(Salary) FROM #Employee)




 








--N number highest using subquery
--Change highlighted color number to get the N number of highest
SELECT TOP 1 *
FROM (
       SELECT DISTINCT TOP 2 Salary
       FROM #Employee
       ORDER BY Salary DESC
) A
ORDER BY Salary ASC
 
--OR
 
SELECT DISTINCT Salary
FROM #Employee Emp1
WHERE 2 = (
       SELECT COUNT(DISTINCT Emp2.Salary)
       FROM #Employee Emp2
       WHERE Emp2.Salary >= Emp1.Salary
)
 












--N number highest using CTE
--Change highlighted color number to get the N number of highest
;WITH RESULT
AS
(
       SELECT Salary, DENSE_RANK() OVER(ORDER BY Salary DESC) AS 'DENSERANK'
       FROM #Employee
)

SELECT TOP 1 * FROM RESULT WHERE DENSERANK = 2 







--OFFSET
--Change highlighted color number to get the N number of highest
SELECT DISTINCT Salary
FROM #Employee
ORDER BY Salary DESC
OFFSET 2-1 ROWS
FETCH NEXT 1 ROWS ONLY

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