CREATE TABLE Student (StuID NUMBER, LName VARCHAR2, Fname VARCHAR2, Age NUMBER, Sex VARCHAR2, Major NUMBER, Advisor NUMBER, city_code VARCHAR2)
CREATE TABLE Has_Allergy (StuID NUMBER, Allergy VARCHAR2)
CREATE TABLE Allergy_Type (Allergy VARCHAR2, AllergyType VARCHAR2)

Create a bar chart showing how many allergytype across allergytype, and show Y from low to high order.
SELECT AllergyType, COUNT(AllergyType) FROM Allergy_Type GROUP BY AllergyType ORDER BY COUNT(AllergyType)
SELECT "AllergyType", COUNT("AllergyType") FROM "Allergy_Type" GROUP BY "AllergyType" ORDER BY COUNT("AllergyType")