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

What are the different names and ages of every friend of either Dan or alice?
SELECT DISTINCT T1.name, T1.age FROM person AS T1 JOIN personfriend AS T2 ON T1.name = T2.name WHERE T2.friend = 'Dan' OR T2.friend = 'Alice'
SELECT DISTINCT "T1"."name", "T1"."age" FROM "person" "T1" JOIN "personfriend" "T2" ON "T1"."name" = "T2"."name" AND ("T2"."friend" = 'Alice' OR "T2"."friend" = 'Dan')