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

Draw a bar chart for what is the average age for each gender?, and show X-axis in ascending order.
SELECT gender, AVG(age) FROM Person GROUP BY gender ORDER BY gender
SELECT "gender", AVG("age") FROM "Person" GROUP BY "gender" ORDER BY "gender"