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

Visualize a bar chart for what is average age for different job title?, I want to rank by the bars from low to high.
SELECT job, AVG(age) FROM Person GROUP BY job ORDER BY job
SELECT "job", AVG("age") FROM "Person" GROUP BY "job" ORDER BY "job" NULLS FIRST