CREATE TABLE school (School_ID NUMBER, Grade CLOB, School CLOB, Location CLOB, Type CLOB)
CREATE TABLE school_bus (School_ID NUMBER, Driver_ID NUMBER, Years_Working NUMBER, If_full_time BOOLEAN)
CREATE TABLE driver (Driver_ID NUMBER, Name CLOB, Party CLOB, Home_city CLOB, Age NUMBER)

Show the proportion of the home city of all drivers with a pie chart.
SELECT Home_city, COUNT(Home_city) FROM driver GROUP BY Home_city
SELECT "Home_city", COUNT("Home_city") FROM "driver" GROUP BY "Home_city"