Table: heisman_winners
Columns: year
winner
school
position
points
of_points_possible

Question: What is the total year of the winner who plays the halfback position with a % of points possible of 80.64%?
SQL: SELECT COUNT("year") FROM heisman_winners WHERE "position" = 'halfback' AND "of_points_possible" = '80.64%'

Question: What is the year of the winner from the army school, plays the halfback position, and has a % of points possible of 39.01%?
SQL: SELECT SUM("year") FROM heisman_winners WHERE "school" = 'army' AND "position" = 'halfback' AND "of_points_possible" = '39.01%'

Question: What position does the winner from Ohio State with 412 points play?
SQL: SELECT "position" FROM heisman_winners WHERE "school" = 'ohio state' AND "points" = '412'

Question: What is the % of points possible of the winner from Penn State?
SQL: SELECT "of_points_possible" FROM heisman_winners WHERE "school" = 'penn state'

Question: What is the position of the winner with 792 points?
SQL: SELECT "position" FROM heisman_winners WHERE "points" = '792'