A DESCRIPTION OF THE REQUEST :
I would like to suggest a new feature in which we can just query a List object as RDBMS table.
So lets say we have a List object of employees - empList which has Employee objects. and Employee object is

class Employee{
private int id;
private String name;
private String dept
}

we should have utility to directly query this database as:
select * from empList where name = 'Gaurav';

JUSTIFICATION :
This will ease developers for writing loop and unnecessary filter logic.