Database: allergy_1

Question: How old are the students with allergies to food and animal types on average?
SQL: SELECT avg(age) FROM Student WHERE StuID IN ( SELECT T1.StuID FROM Has_allergy AS T1 JOIN Allergy_Type AS T2 ON T1.Allergy  =  T2.Allergy WHERE T2.allergytype  =  "food" INTERSECT SELECT T1.StuID FROM Has_allergy AS T1 JOIN Allergy_Type AS T2 ON T1.Allergy  =  T2.Allergy WHERE T2.allergytype  =  "animal")

Question: What is the full name of each student who is not allergic to any type of food.
SQL: SELECT fname ,  lname FROM Student WHERE StuID NOT IN (SELECT T1.StuID FROM Has_allergy AS T1 JOIN Allergy_Type AS T2 ON T1.Allergy  =  T2.Allergy WHERE T2.allergytype  =  "food")

Question: How many male students (sex is 'M') are allergic to any type of food?
SQL: SELECT count(*) FROM Student WHERE sex  =  "M" AND StuID IN (SELECT StuID FROM Has_allergy AS T1 JOIN Allergy_Type AS T2 ON T1.Allergy  =  T2.Allergy WHERE T2.allergytype  =  "food")

Question: What are the distinct first names and cities of the students who have allergy either to milk or to cat?
SQL: SELECT DISTINCT T1.fname ,  T1.city_code FROM Student AS T1 JOIN Has_Allergy AS T2 ON T1.stuid  =  T2.stuid WHERE T2.Allergy  =  "Milk" OR T2.Allergy  =  "Cat"

Question: How many students are over 18 and do not have allergy to food type or animal type?
SQL: SELECT count(*) FROM Student WHERE age  >  18 AND StuID NOT IN ( SELECT StuID FROM Has_allergy AS T1 JOIN Allergy_Type AS T2 ON T1.Allergy  =  T2.Allergy WHERE T2.allergytype  =  "food" OR T2.allergytype  =  "animal")

Question: What are the first name and major of the students who are able to consume soy?
SQL: SELECT fname ,  major FROM Student WHERE StuID NOT IN (SELECT StuID FROM Has_allergy WHERE Allergy  =  "Soy")