SELECT POSITION FROM player GROUP BY name HAVING avg(Points)  >=  20
List the position of players with average number of points scored by players of that position bigger than 20.
SELECT POSITION FROM player GROUP BY name HAVING avg ( Points ) > = 20
select position from player group by name having avg ( points ) > = value
List the position of players with average number of points scored by players of that position bigger than 20 .