human
Schema:
Person (name, age, city, gender, job)
PersonFriend (name, friend, year)
Please answer with SQL.
assistant
Sure, I understand.
human
Who has the shortest relationship among the people Zach is friends with?
assistant
SELECT name FROM personfriend WHERE name = 'Zach' ORDER BY year LIMIT 1;
human
How about the longest?
assistant
SELECT name FROM personfriend WHERE name = 'Zach' ORDER BY year DESC LIMIT 1;
human
Also show how long have they been freinds.
assistant
SELECT name , year FROM personfriend WHERE name = 'Zach' ORDER BY year DESC LIMIT 1;
human
How old are they?
assistant
SELECT T1.age FROM Person AS T1 JOIN PersonFriend AS T2 ON T1.name = T2.friend WHERE T2.name = "Zach" AND T2.year = ( SELECT MAX( YEAR ) FROM PersonFriend WHERE name = "Zach" ) ;