how to find 2nd lowest salary in sql code example

Example 1: how to get second highest salary in each department in sql

SELECT E.Employers_name, E.dep_number, E.salary
FROM Employers E
WHERE 1 = (SELECT COUNT(DISTINCT salary) 
        FROM Employers B 
        WHERE B.salary > E.salary AND E.dep_number = B.dep_number)
group by E.dep_number

Example 2: third highest salary in sql

SELECT ename,sal from Employee e1 where 
        N-1 = (SELECT COUNT(DISTINCT sal)from Employee e2 where e2.sal > e1.sal)

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