Single query or stored procedure to fetch data - mysql

Question

I have created three tables
Here I would like to fetch all question_tags and answers related to a perticular question(id).
for that needed Single query or stored procedure
create table questions(id varchar(100),title varchar(140),body varchar(2000),
primary key(id));
create table question_tags(id varchar(50),tag_name varchar(50),question_id varchar(100),
primary key(id),foreign key(question_id) references questions(id));
create table answers(id varchar(50),answer varchar(2000),question_id varchar(100),
primary key(id),foreign key(question_id) references questions(id));
and following data in table
mysql> select * from questions;
+----+-------+-------------+
| id | title | body |
+----+-------+-------------+
| 1 | a | hello |
| 2 | b | hii |
| 3 | c | bye |
| 4 | d | how are you |
+----+-------+-------------+
4 rows in set (0.03 sec)
mysql> select * from question_tags
+----+----------+-------------+
| id | tag_name | question_id |
+----+----------+-------------+
| t1 | java | 1 |
| t2 | mysql | 1 |
| t3 | jquery | 1 |
+----+----------+-------------+
3 rows in set (0.00 sec)
mysql> select * from answers;
+----+-----------+-------------+
| id | answer | question_id |
+----+-----------+-------------+
| a1 | good | 1 |
| a2 | excellent | 1 |
| a3 | ok | 1 |
+----+-----------+-------------+
3 rows in set (0.00 sec)

Answer 1

I think you search for the JOIN [ON] Statement. For your Tablelayout it should be something like this:
SELECT `question_tags`.*, `answers`.*
FROM `questions`
JOIN `answers`
ON `questions`.`id` = `answers`.`question_id`
JOIN `question_tags`
ON `questions`.`id` = `question_tags`.`question_id`
WHERE `questions`.`id` = {YOUR_ID}
Or only Question-Id, Answers, Tags:
SELECT `questions`.`id` AS `question_id`,
`question_tags`.`tag_name`,
`answers`.`answer`
FROM `questions`
JOIN `answers`
ON `questions`.`id` = `answers`.`question_id`
JOIN `question_tags`
ON `questions`.`id` = `question_tags`.`question_id`
WHERE `questions`.`id` = 0
EDIT:
And for everything in one Row:
SELECT `questions`.`id` AS `question_id` ,
(
SELECT GROUP_CONCAT( `question_tags`.`tag_name` SEPARATOR ';')
FROM `question_tags`
WHERE `question_id` =0
) AS `Tags` ,
(
SELECT GROUP_CONCAT( `answers`.`answer` SEPARATOR ';' )
FROM `answers`
WHERE `question_id` =0
) AS `Answers`
FROM `questions`
WHERE `questions`.`id` =0
Please keep in mind that this isn't the best way for doing this. I can't provide you a Stored Procedure since i'm unfamiliar with SP in MySQL.
In my Opinion there is no way to select/return/display your desired format as a Table.

Answer 2

The query is:
select * from questions join question_tags on (questions.id = question_tags.question_id) join answers on (questions.id=answers.question_id);
Here is a fiddle; it greatly helps us assit you if you provide one with your question.
Please read about mySQL naming conventions (tables in signular) and about keyreferences (I have changed yours to integers but you can also auto_increment etc).