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

How old is the average person for each job Show bar chart, and show by the Y from low to high.
SELECT job, AVG(age) FROM Person GROUP BY job ORDER BY AVG(age)
SELECT "job", AVG("age") FROM "Person" GROUP BY "job" ORDER BY AVG("age")