Question

I’m not a db expert and this is for sure a newbie question.

I’ve a SQLite db containing data about movies.

The main table (movies) contains:

• movie_id (autoincrement, primary);
• title;
• year;
• other fields;

Then I have the actors table:

• actor_id (autoincrement);
• name;
• surname;

Then I have the cast table:

• movie_id (related to movies table);
• actor_id (related to the actors table, eg. Robin Williams);
• character_name (the name of the character, eg. “Mrs Doubtfire”);

In a single query I should retrieve all the characters of a given movie (at the application level I’ve the id of the current movie to start), name and surname of the actor and a list of the movies (!= this current movie) where the actor had a role:

Character_name   |   Actor          |   Other movies where we've seen this actor
Mrs Doubtfire    |   Robin Williams |   Mork & Mindy, Dead Poets Society, ...
Other name       |   Other actor    |   Related movies,...

Is this possible? How?

Answer 1

Try:

select max(c.character_name) character_name,
       max(a.name) || ' ' || max(a.surname) actor,
       group_concat(distinct m.title) other_movies
from cast c
join actors a on c.actor_id = a.actor_id
left join cast omc on c.actor_id = omc.actor_id and c.movie_id <> omc.movie_id
left join movies m on omc.movie_id = m.movie_id
where c.movie_id = ?
group by a.actor_id