MYSQL: two results in one row - php

Question

Iam solving an issue. Iam having 2 tables:
ORDERS - which defines customer order
+-------------------+-------------+------+-----+-------------------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------------+-------------+------+-----+-------------------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| customer_id | int(11) | NO | MUL | NULL | |
| from_date | date | YES | | NULL | |
| datum_dodani | date | NO | | NULL | |
| popis | text | NO | | NULL | |
| status | tinyint(4) | NO | | 1 | |
| cena | varchar(8) | NO | | NULL | |
| vytvoril | tinyint(4) | NO | MUL | NULL | |
| vytvoreno | timestamp | NO | | CURRENT_TIMESTAMP | |
| vyresil | tinyint(4) | YES | | NULL | |
| prirazena_skupina | tinyint(4) | YES | | NULL | |
| narocnost | smallint(6) | YES | | NULL | |
| cas | varchar(6) | YES | | NULL | |
| priorita | tinyint(1) | NO | | 0 | |
+-------------------+-------------+------+-----+-------------------+----------------+
and POLOZKY_OBJEDNAVKY which defines each row of customer order:
+-----------+------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-----------+------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| order_id | int(11) | YES | MUL | NULL | |
| servis_id | tinyint(4) | YES | MUL | NULL | |
| cena | int(11) | YES | | NULL | |
| pocet | tinyint(4) | YES | | NULL | |
| popis | text | YES | | NULL | |
| bike | text | YES | | NULL | |
+-----------+------------+------+-----+---------+----------------+
These two tables are linked via polozky_objednavky.order_id -> orders.id
And the problem is that Iam not able to create query which would return something like this:
+-------------------+-------------+--------------+------------------------+
| orders.id | customer_id | orders.status| polozky_objednavky.bike|
+-------------------+-------------+--------------+------------------------+
| 1 | 23 | 2| 24, 25, 46|
| 2 | 25 | 5| 36|
So that means that in column polozky_objednavky.bike there will be select which returns 3 rows from POLOZKY_OBJEDNAVKY with key POLOZKY_OBJEDNAVKY.ORDER_ID = ORDERS.ID
Hope i explained it well and sorry for dumb question, but I tried to select it with JOINS or select from select but has not succeed :(
Thank you,
M.

Answer 1

You need to join the tables. Try this:
SELECT o.id AS orders_id,
o.customer_id,
o.status,
p.bike
FROM ORDERS AS o
LEFT OUTER JOIN POLOZKY_OBJEDNAVKY AS p
ON p.order_id = o.id
If you have a specific condition just add it to the end as a WHERE clause.
You can read about joins at w3school and sitepoint

Answer 2

I think you need an aggregation query with group_concat():
SELECT o.id AS orders_id, o.customer_id, o.status,
GROUP_CONCAT(p.bike SEPARATOR ', ') as bikes
FROM ORDERS o JOIN
POLOZKY_OBJEDNAVKY po
ON p.order_id = o.id
GROUP BY o.id, po.customer_id;