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

Visualize a bar chart for what are the different classes of races, and how many races correspond to each?, order x axis in asc order.
SELECT Class, COUNT(*) FROM race GROUP BY Class ORDER BY Class
SELECT "Class", COUNT(*) FROM "race" GROUP BY "Class" ORDER BY "Class" NULLS FIRST