Sum and Average of Items ordered - SQL Functions - 1

SESSION NAME: SQL Functions - 1.

QUESTION NAME: Sum and Average of Items ordered.

TABLE DESCRIPTION:

Write a query that prints the sum and average
of the customerid, quantity and price.

Note: Use SQL in-built Function to calculate the sum and
average of the tuples in items_ordered table.

The statement has to return a single result which
contains the sum and average value of customerid,
quantity and price columns of everything returned in the
items_ordered table.

CODE:
select sum(customerid),sum(quantity),sum(price),avg(customerid),avg(quantity),avg(price) from items_ordered;