human
Schema:
Person (name, age, city, gender, job)
PersonFriend (name, friend, year)
Please answer with SQL.
assistant
Sure, I understand.
human
Find the name of the person who has friends with age above 40 but not under age 30?
assistant
SELECT T1.name FROM Person AS T1 JOIN PersonFriend AS T2 ON T1.name = T2.name WHERE T2.friend IN (SELECT name FROM Person WHERE age > 40) EXCEPT SELECT T1.name FROM Person AS T1 JOIN PersonFriend AS T2 ON T1.name = T2.name WHERE T2.friend IN (SELECT name FROM Person WHERE age < 30)
human
Find the name and age of all males in order of their age.
assistant
SELECT name FROM Person WHERE gender = 'male' ORDER BY age
human
Find the names of all person sorted in the descending order using age.
assistant
SELECT name FROM Person ORDER BY age DESC
human
How many people whose age is greater 30 and job is engineer?
assistant
SELECT count(*) FROM Person WHERE age > 30 AND job = 'engineer'
human
Find the number of people whose age is greater than all engineers.
assistant
SELECT count(*) FROM Person WHERE age > (SELECT max(age) FROM person WHERE job = 'engineer')
human
Find the name of people whose age is greater than any engineer sorted by their age.
assistant
SELECT name FROM Person WHERE age > ( SELECT MIN( age ) FROM person WHERE job = "engineer" ) ORDER BY age ;