Selecting data from three tables - mysql

Question

Currently at the moment I have managed to join two tables to retrieve the information that is need.
I have now decided to try and retrieve another piece of information from a another table ( users.user_id ) but the query I'm trying to use doesn't seem to work. If someone could help with the query would be great.
Here is my current query that works fine.
"SELECT films.movie_title, films.rating, films.actor, reviewed.review
FROM films
INNER JOIN reviewed
ON films.movie_id=reviewed.movie_id";
Here is the query being used to get data from three tables but wont work
"SELECT films.movie_title, films.rating, films.actor, reviewed.review users.name
FROM films
OUTER JOIN reviewed, users
ON films.movie_id=reviewed.movie_id && films.user_id=users.user_id";
Database: film
Table structure for table films
CREATE TABLE IF NOT EXISTS `films` (
`movie_id` int(4) NOT NULL AUTO_INCREMENT,
`movie_title` varchar(100) NOT NULL,
`actor` varchar(100) NOT NULL,
`rating` varchar(20) NOT NULL,
`user_id` int(100) NOT NULL,
PRIMARY KEY (`movie_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ;
INSERT INTO `films` (`movie_id`, `movie_title`, `actor`, `rating`, `user_id`) VALUES
(1, 'batman', 'christian bale', 'Excellent', 3),
(2, 'Bne', 'reee', 'Ok', 3),
(3, 'Today', 'dd', 'Fair', 3);
Table structure for table reviewed
CREATE TABLE IF NOT EXISTS `reviewed` (
`review_id` int(4) NOT NULL AUTO_INCREMENT,
`review` mediumtext NOT NULL,
`movie_id` int(4) NOT NULL,
PRIMARY KEY (`review_id`),
KEY `movie_id` (`movie_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ;
INSERT INTO `reviewed` (`review_id`, `review`, `movie_id`) VALUES
(1, 'Wicked film', 1),
(2, 'gedtg', 2),
(3, 'dddd', 3);
Table structure for table users
CREATE TABLE IF NOT EXISTS `users` (
`user_id` int(4) NOT NULL AUTO_INCREMENT,
`email` varchar(40) NOT NULL,
`password` varchar(40) NOT NULL,
`name` varchar(30) NOT NULL,
PRIMARY KEY (`user_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=30 ;
INSERT INTO `users` (`user_id`, `email`, `password`, `name`) VALUES
(1, 'ben#talktalk.net', 'password', 'Ben'),
(2, 'richard#talk.net', '1', 'richard'),

Answer 1

Try this:
SELECT films.movie_title, films.rating, films.actor, reviewed.review, users.name
FROM films
LEFT JOIN reviewed ON films.movie_id=reviewed.movie_id
LEFT JOIN users ON films.user_id=users.user_id

Answer 2

Is it possible that you want to have the user_id in your reviews table?
That way you'd have the following:
table of movies; only one per movie
table of users; only one per user
table of reviews; one per review linked to a user and to a movie
The reviews table would now have the rating, the review itself, a user id, a movie id and a unique review id.
That way a Batman could be given an Excellent rating by me and an Average rating by you without duplicating the movie row.
To just fix your above query, you can use the following:
SELECT films.movie_title, films.rating, films.actor, reviewed.review, users.name FROM films, reviewed, users WHERE films.movie_id = reviewed.movie_id AND films.user_id = users.user_id;

Answer 3

If you want to print only films with reviews, you don't need OUTER JOIN.
SELECT films.movie_title, films.rating, films.actor, reviewed.review users.name
FROM films JOIN reviewed on films.movie_id=reviewed.movie_id
JOIN users ON films.user_id=users.user_id;
If you want to print all films, even those with 0 reviews, you have to use LEFT JOIN (MySQL doesn't have FULL OUTER JOIN).
SELECT films.movie_title, films.rating, films.actor, reviewed.review users.name
FROM films LEFT JOIN reviewed on films.movie_id=reviewed.movie_id
LEFT JOIN users ON films.user_id=users.user_id;