CREATE TABLE Lives_in (stuid NUMBER, dormid NUMBER, room_number NUMBER)
CREATE TABLE Dorm (dormid NUMBER, dorm_name VARCHAR2, student_capacity NUMBER, gender VARCHAR2)
CREATE TABLE Dorm_amenity (amenid NUMBER, amenity_name VARCHAR2)
CREATE TABLE Has_amenity (dormid NUMBER, amenid NUMBER)
CREATE TABLE Student (StuID NUMBER, LName VARCHAR2, Fname VARCHAR2, Age NUMBER, Sex VARCHAR2, Major NUMBER, Advisor NUMBER, city_code VARCHAR2)

What is the oldest age for each gender of student? Return a bar chart, I want to sort maximal age in descending order.
SELECT Sex, MAX(Age) FROM Student GROUP BY Sex ORDER BY MAX(Age) DESC
SELECT "Sex", MAX("Age") FROM "Student" GROUP BY "Sex" ORDER BY MAX("Age") DESC