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

what is minimum age for different job title?, and list by the job in desc.
SELECT job, MIN(age) FROM Person GROUP BY job ORDER BY job DESC
SELECT "job", MIN("age") FROM "Person" GROUP BY "job" ORDER BY "job" DESC