CREATE TABLE track (Track_ID NUMBER, Name CLOB, Location CLOB, Seating FLOAT, Year_Opened FLOAT)
CREATE TABLE race (Race_ID NUMBER, Name CLOB, Class CLOB, Date CLOB, Track_ID CLOB)

Create a pie chart showing how many class across class.
SELECT Class, COUNT(Class) FROM race GROUP BY Class
SELECT "Class", COUNT("Class") FROM "race" GROUP BY "Class"