CREATE TABLE PersonFriend (name VARCHAR2, friend VARCHAR2, year NUMBER)
CREATE TABLE Person (name VARCHAR2, age NUMBER, city CLOB, gender CLOB, job CLOB)

Display a bar chart for how old is the average person for each job?, sort in descending by the total number.
SELECT job, AVG(age) FROM Person GROUP BY job ORDER BY AVG(age) DESC
SELECT "job", AVG("age") FROM "Person" GROUP BY "job" ORDER BY AVG("age") DESC