MySQL getting data + recursive query - mysql

Question

I have got 3 tables:
+-----+----------+ +-----+----------+-------+ +-----+----------+-------+
| id | A_id | | A_id| B_id | value | | B_id| B_id_ | value |
+-----+----------+ +-----+----------+-------+ +-----+----------+-------+
| 1| 5| | 5| 1| aa| | 1| 2| zzxx|
+-----+----------+ +-----+----------+-------+ +-----+----------+-------+
| 2| 3| | 3| 3| bb| | 2| | vvyy|
+-----+----------+ +-----+----------+-------+ +-----+----------+-------+
| 3| 4| bbll|
+-----+----------+-------+
| 5| | oopp|
+-----+----------+-------+
| 4| 5| mmnn|
+-----+----------+-------+
What SELECT statement i need to use, so that output would look like this(table3 can be up to 4 levels deep into it self):
+----+------------------------------+
| id | value |
+----+------------------------------+
| 1| aa\zzxx\vvyy|
+----+------------------------------+
| 2| bb\bbll\mmnn\oopp|
+----+------------------------------+
As i don't have much experience with DB and SQL, this is hard for me. And I have no vision about how to do this.
This has to be done in MySQL. Hardest thing as i have read is the recursive query in MySQL since it doesn't exist, so people have to simulate it. I have read some SO topics about the recursive Query, but i understood that's not for me.
Any help is appreciated.

Answer 1

By hard and fast learning I managed to solve my problem. Code below.
SELECT DISTINCT
OTHER.DATA,
concat(
'/',ifnull(t4.value,''), CASE WHEN (t4.value is NULL) then '' else '/' END,
ifnull(t3.value,''), CASE WHEN (t3.value is NULL) then '' else '/' END,
ifnull(t2.value,''), CASE WHEN (t2.value is NULL) then '' else '/' END,
ifnull(t1.value,''), CASE WHEN (t1.value is NULL) then '' else '/' END,
table2.value
) as 'My Column name'
FROM
table1
LEFT JOIN table2 ON
(table1.A_id = table2.A_id)
LEFT JOIN table3 as t1 ON
(t1.B_id = table2.B_id)
LEFT JOIN table3 AS t2 ON
(t2.B_id = t1.B_id_)
LEFT JOIN table3 AS t3 ON
(t3.B_id = t2.B_id_)
LEFT JOIN table3 AS t4 ON
(t4.B_id = t3.B_id_)
Big Thanks to #Damodaran and his solution for recursive query.
How to create a MySQL hierarchical recursive query
Be careful with using this code, as I have used it for DB, which is only queried for data. So this approach might be slow on other different usage. If you use this, I suggest you to think about indexing some fields.