how join tables in optimized way - mysql

Question

hellow.I have 3 table like below;
Movie Table like this:
+------+-------+-----+
| id | name | |
+------+-------+-----+
+------+-------+-----+
| 1 | got | |
+------+-------+-----+
+------+-------+-----+
| 2 | Drive | |
+------+-------+-----+
+------+-------+-----+
| 3 | Thor | |
+------+-------+-----+
Janra:
+------+-------------+
| id | janra_name |
+------+-------------+
+------+-------------+
| 1 | action |
+------+-------------+
+------+-------------+
| id | comedy |
+------+-------------+
Movie_janra: (movie_id is a foreign key to id in movie table)
+--------+-------------+
| mov_id | janra_id |
+--------+-------------+
+--------+-------------+
| 1 | 1 |
+--------+-------------+
+--------+-------------+
| 1 | 2 |
+--------+-------------+
nation Table:
+------+-------------+
| id | name |
+------+-------------+
+------+-------------+
| 1 | us |
+------+-------------+
+------+-------------+
| 2 | uk |
+------+-------------+
movie_nation Table:
+------+-------------+
|mov_id| nation_id |
+------+-------------+
+------+-------------+
| 1 | 1 |
+------+-------------+
+------+-------------+
| 1 | 2 |
+------+-------------+
then i use query like this:
SELECT *
FROM
(SELECT movie.id,
movie.name,
f.janra_name
FROM `movie`
LEFT JOIN
(SELECT mj.movie_id,
janra.janra_name
FROM movie_janra AS mj
LEFT JOIN janra ON mj.janra_id=janra.id) AS f ON f.movie_id=movie.id) AS ll
LEFT JOIN
(SELECT movie_nation.movie_id,
nation.nation
FROM movie_nation
INNER JOIN nation ON nation.id=movie_nation.nation_id) AS rr ON rr.movie_id=ll.id
(join movie with result of (movie_janra and janra)) AS ll this give me all movies with all janra like below
id name janra
1 got action
1 got comedy
then i join this with result of (join movie_nation with nation) AS rr ON rr.movie_id = ll.id
but this query result is like this
+-----------+-------------+-------------+----------+
| id | name | janra | nation |
+-----------+-------------+-------------+----------+
+-----------+-------------+-------------+----------+
| 1 | got | action | us |
+-----------+-------------+-------------+----------+
+-----------+-------------+-------------+----------+
| 1 | got | action | uk |
+-----------+-------------+-------------+----------+
+-----------+-------------+-------------+----------+
| id | name | comedy | us |
+-----------+-------------+-------------+----------+
+-----------+-------------+-------------+----------+
| id | name | comedy | uk |
+-----------+-------------+-------------+----------+
I use MySQL.
This result is more than I want. I want two row. Thank you all.

Answer 1

First thing, remove the tables movie_nation and movie_janra then just move the columns to movie table as shown below then retain all the other tables:
Database tables
4: https://i.stack.imgur.com/Mf6MU.png
then I have added table data:
movie table
Janra table
Nation table
Then use this code to get your desired output:
select a.id,a.movie_name,b.janra_name, c.nation_name
from movie a
left outer join janra b
on a.janra_id = b.id
left outer join nation c
on a.nation_id = c.id;
Just select the ID and Movie name to movie table then left outer join to nation and janra table using their corresponding IDs from table movie to get the janra_name and nation_name.
This is the ouput of it: query output here

Answer 2

based on the previous answer, you just need to change the data type of janra_id and nation_id from movie table from int to varchar. then you can now use multiple janras and nation using comma separated values.
use this new code to achieve that.
select a.id, a.movie_name, GROUP_CONCAT(distinct a.janra_name) janra_name,
GROUP_CONCAT(distinct a.nation_name) nation_name
from (
select a.*,b.janra_name,c.nation_name
from movie a
left outer join janra b
on FIND_IN_SET(b.id, a.janra_id)
left outer join nation c
on FIND_IN_SET(c.id, a.nation_id)
order by a.movie_name ) a
group by a.movie_name;
Here is the sample data:
And here is the output of the query: