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?, order by the x-axis in desc.
SELECT job, AVG(age) FROM Person GROUP BY job ORDER BY job DESC
SELECT "job", AVG("age") FROM "Person" GROUP BY "job" ORDER BY "job" DESC NULLS LAST