JOIN Multiple Tables with Many to Many Relationship

Question

I have around 30 tables. eg: producer, director etc related to movies

each table consists of movie_id and celeb_id field

there is a table celebs which consists of fields: celeb_id celeb_name

For a specific movie_id i want all the information retrieved in a single query.

SELECT b_movies.*, bb_celebs.celeb_name 
FROM b_movies
LEFT JOIN b_producer ON b_movies.id = b_producer.movie_id 
LEFT JOIN bb_celebs ON b_producer.celeb_id = bb_celebs.celeb_id
LEFT JOIN b_director ON b_movies.id = b_director.movie_id 
LEFT JOIN bb_celebs ON b_director.celeb_id = bb_celebs.celeb_id
WHERE b_movies.id = 'UNIQUE ID';

I want the names of celebs associated with the type of work:

Director
1. ABC
2. XYZ

Producer
1. ABC2
2. XYZ2

All names of celebs are stored in celebs table with celeb_id and celeb_name and in producer table movie_id and celeb_id and same structure applies to directors, etc.. all other tables

Please help.

Regards,

Kenh

Answer 1

SELECT ...
FROM ...
LEFT JOIN ... ON ...
WHERE ...
ORDER BY ...

Appropriate values for ... are left as an excercise to the OP...

Answer 2

(select 'Director', celeb.name from celebs c join director d on c.celeb_id = d.celeb_id and d.movie_id = "movie_id")

union all

(select 'Producer', celeb.name from celebs c join producer p on c.celeb_id = p.celeb_id and p.movie_id = "movie_id")

union all .....