CS50 Pset 7 13.sql, I can't solve it, nested sqlite3 database

Question

DataBase movies.db

tables

directors (movie_id, person_id)

movies (id, title, year)

people

Answer 1

I solved this problem by using DISTINCT and NOT EQUAL operator in SQL.

Here are the steps I took:

SELECT DISTINCT(name)
FROM people
JOIN stars ON stars.person_id = people.id
JOIN movies ON movies.id = stars.movie_id
WHERE movies.id IN
    (SELECT movie_id
     FROM movies
     JOIN stars ON stars.movie_id = movies.id
     JOIN people ON people.id = stars.person_id
     WHERE people.name = "Kevin Bacon"
       AND people.birth = 1958)
  AND people.name != "Kevin Bacon";

Result is 176 distinct rows of names.