Calculation of the nth value highest in a group
Hi allI was following the problem to be solved. I have a table with the following structure:
Table emp
EmpID number
NAme varchar2
DeptID number
Salary number
Now, to find the maximum salary in each Department, I can use:select DeptId,max(salary) from emp group by DeptId;
Now to find the second salary max, I can do below:select DeptId,max(salary) from emp
where (DeptId,salary) not in (select DeptId,max(salary) salary from emp group by DeptId) group by DeptId;
But suppose I need to find the 5th or 6th salary max then this method will be heavy.I need a SQL query in which I can dynamically pass the parameter to calculate.
Kindly help.
Calculation of the nth value highest in a group
In recent db versions nth_value seems to be the game.
Tags: Database
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