CREATE TABLE person (name CLOB, age NUMBER, city CLOB, gender CLOB, job CLOB)
CREATE TABLE personfriend (name CLOB, friend CLOB, year NUMBER)

Find the name of persons who are friends with Bob.
SELECT T1.name FROM person AS T1 JOIN personfriend AS T2 ON T1.name = T2.name WHERE T2.friend = 'Bob'
SELECT "T1"."name" FROM "person" "T1" JOIN "personfriend" "T2" ON "T1"."name" = "T2"."name" AND "T2"."friend" = 'Bob'