/* select the snumbers and the number of parts suppled and the average qty of parts supplied for those suppliers who have a qty greater than the average qty of all suppliers. */
select avg(qty)
from spj
group by snumber;

#/ average of parts supplied */
select avg(qty)
from spj;

/* select the snumbers and the number of parts suppled and the average qty of parts supplied for those suppliers who have a qty greater than the average qty of all suppliers. */
select snumber, avg(qty)
from spj
group by snumber
having avg(qty) > (
   
	(select avg(qty) from spj));

	
	
	
/* select number and the avg qty for suppliers whos range is greater tham the sum of all qty */