Question { Qwest, 102919 }

Write a query to get 2nd maximum salary in an employee table ?

Answer

The following solution is for getting 6th highest salary
from Employee table ,
SELECT TOP 1 salary
FROM (
SELECT DISTINCT TOP 6 salary
FROM employee
ORDER BY salary DESC) a
ORDER BY salary

or

SELECT MIN(Sal) FROM TableName
WHERE Sal IN
(SELECT TOP 6 Sal FROM TableName ORDER BY Sal DESC)


Reference:

http://blog.sqlauthority.com/2008/04/02/sql-server-find-nth-highest-salary-of-employee-query-to-retrieve-the-nth-maximum-value/

Question { Qwest, 102919 }

Write a query to get 2nd maximum salary in an employee table ?

Answer

ex:
Raj 200
kamal 300
hajka 500
Suresh 200
so 1st max salary is 500,2nd is 300,3rd is 200
we need 2nd maximum only(i.e 300)
Query is below

SELECT MIN(SALARY) FROM EMPLOYEE WHERE SALARY IN (SELECT
DISTINCT TOP 2 SALARY FROM EMPLOYEE ORDER BY SALARY DESC)

I've checked this query.
it will give 2nd maximum value.
if it is 3rd max salary then use TOP 3 instead of TOP 2
if u need detail explanation:
1)
Qry: SELECT DISTINCT TOP 2 SALARY FROM EMPLOYEE ORDER BY
SALARY DESC
Output:500
300
2)
SELECT MIN(SALARY) FROM EMPLOYEE WHERE SALARY IN (SELECT
DISTINCT TOP 2 SALARY FROM EMPLOYEE ORDER BY SALARY DESC)
ans: it gets minimum salary from subquery( from above 1st ans)

Question { 4680 }

can Array contains different datatypes ?

Answer

yes possible in dotnet by using Collection namespace