Do anyone know 2 find nth max or min

[anandasundaram j]

Supposing u have a table name Emp where u store all the employee info.
U need to find out the person who gets 5th maximum salary
How 2 do this without using subqueries, because i am using older version which does not supports subqueries?
FYI the implementation of nth max or min using sub query is
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select a.name from emp a where &n=(select count(distinct sal) from emp b where a.sal>b.sal;
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plz tell me the equivalent query