--- min

The `min' aggregate function computes the minimum value of an
   expression composed of constants and data base fields connected
   by the standard arithmetic operators: +. -, *, /.

Aggregate functions are only valid when used in `select' or `having'
   clauses.


EXAMPLE: 

          sql> select dept_no, job, min(salary)

          sql> select job, min (salary + commission)

	  sql> select min(avg(salary))
