CREATE TABLE has_allergy (stuid NUMBER, allergy CLOB)
CREATE TABLE allergy_type (allergy CLOB, allergytype CLOB)
CREATE TABLE student (stuid NUMBER, lname CLOB, fname CLOB, age NUMBER, sex CLOB, major NUMBER, advisor NUMBER, city_code CLOB)

How many students are age 18?
SELECT COUNT(*) FROM student WHERE age = 18
SELECT COUNT(*) FROM "student" WHERE "age" = 18