name1 genre1,genre2,genre3
name2 genre2,genre6,genre8

select m.name, group_concat(g.genre) from movies m, genres g
where m.id = g.movie_id group by m.name;

mysql> create table movies (id int, name varchar(100));
Query OK, 0 rows affected (0.04 sec)

mysql> create table genres (movie_id int, genre varchar(100));
Query OK, 0 rows affected (0.02 sec)

mysql> insert into movies values (1, 'Terminator');
Query OK, 1 row affected (0.01 sec)

mysql> insert into movies values (2, 'Lord of the Rings');
Query OK, 1 row affected (0.01 sec)

mysql> insert into genres values (1, 'action');
Query OK, 1 row affected (0.01 sec)

mysql> insert into genres values (1, 'sci-fi');
Query OK, 1 row affected (0.01 sec)

mysql> insert into genres values (2, 'fantasy');
Query OK, 1 row affected (0.00 sec)

mysql> insert into genres values (2, 'adventure');
Query OK, 1 row affected (0.01 sec)

mysql> select m.name, group_concat(g.genre) from movies m, genres g where m.id = g.movie_id group by m.name;
+-------------------+-----------------------+
| name              | group_concat(g.genre) |
+-------------------+-----------------------+
| Lord of the Rings | adventure,fantasy     |
| Terminator        | sci-fi,action         |
+-------------------+-----------------------+