CREATE TABLE Person (name VARCHAR, age INT, city TEXT, gender TEXT, job TEXT)
CREATE TABLE PersonFriend (name VARCHAR, friend VARCHAR, year INT)

Return a bar chart on what is the average age for each gender?, and rank by the y-axis from low to high.
SELECT gender, AVG(age) FROM Person GROUP BY gender ORDER BY AVG(age)
SELECT "gender", AVG("age") FROM "Person" GROUP BY "gender" ORDER BY AVG("age") NULLS FIRST