Emp Dept
=== ======
Ename - DeptNo
Eno - DName
DeptNo - Location

Count the number of employees in each department and get the department which has least number of employees


If a table has one column named as 'X' type integer
it contains 3,5,10,-2,15,41,2 and so on

If we a number (i.e., that given number is in the above list) as input, get the immediate biggest number for that given one. (Query only not PL/SQL script)