SELECT min(Order_Quantity) ,  avg(Order_Quantity) ,  max(Order_Quantity) FROM INVOICES
Show the minimum, average, maximum order quantity of all invoices.
SELECT min ( Order_Quantity ) , avg ( Order_Quantity ) , max ( Order_Quantity ) FROM INVOICES
select min ( order_quantity ) , avg ( order_quantity ) , max ( order_quantity ) from invoices
Show the minimum , average , maximum order quantity of all invoices .