CREATE TABLE made_by (id NUMBER, msid NUMBER, pid NUMBER)
CREATE TABLE written_by (id NUMBER, msid NUMBER, wid NUMBER)
CREATE TABLE tv_series (sid NUMBER, title CLOB, release_year NUMBER, num_of_seasons NUMBER, num_of_episodes NUMBER, title_aka CLOB, budget CLOB)
CREATE TABLE producer (pid NUMBER, gender CLOB, name CLOB, nationality CLOB, birth_city CLOB, birth_year NUMBER)
CREATE TABLE genre (gid NUMBER, genre CLOB)
CREATE TABLE tags (id NUMBER, msid NUMBER, kid NUMBER)
CREATE TABLE classification (id NUMBER, msid NUMBER, gid NUMBER)
CREATE TABLE directed_by (id NUMBER, msid NUMBER, did NUMBER)
CREATE TABLE cast (id NUMBER, msid NUMBER, aid NUMBER, role CLOB)
CREATE TABLE actor (aid NUMBER, gender CLOB, name CLOB, nationality CLOB, birth_city CLOB, birth_year NUMBER)
CREATE TABLE copyright (id NUMBER, msid NUMBER, cid NUMBER)
CREATE TABLE director (did NUMBER, gender CLOB, name CLOB, nationality CLOB, birth_city CLOB, birth_year NUMBER)
CREATE TABLE writer (wid NUMBER, gender CLOB, name CLOB, nationality CLOB, birth_city CLOB, birth_year NUMBER)
CREATE TABLE company (id NUMBER, name CLOB, country_code VARCHAR2)
CREATE TABLE movie (mid NUMBER, title CLOB, release_year NUMBER, title_aka CLOB, budget CLOB)
CREATE TABLE keyword (id NUMBER, keyword CLOB)

Who was the director of the movie Joy from 2015 ?
SELECT director.name FROM directed_by, director, movie WHERE director.did = directed_by.did AND movie.mid = directed_by.msid AND movie.release_year = 2015 AND movie.title = 'Joy'
SELECT "director"."name" FROM "directed_by" JOIN "director" ON "directed_by"."did" = "director"."did" JOIN "movie" ON "directed_by"."msid" = "movie"."mid" AND "movie"."release_year" = 2015 AND "movie"."title" = 'Joy'