INTERVIEW QUESTIONS ORACLE SQL PLUS DETAILS

Question: Find out nth highest salary from emp table

Answer: select sal from emp E
wherenulln-1=(select count( distinct sal) from emp where
sal>E.sal);

select sal from emp E
wherenulln-1=(select count( distinct sal) from emp where
sal>E.sal); Source: CoolInterview.com

select sal from emp e where &n - 1 = (select count(*) from emp where sal > e.sal); Source: CoolInterview.com

select sal from emp where rowid=n order by sal desc; Source: CoolInterview.com

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