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SET AUTOCOMMIT = 0
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START TRANSACTION
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DROP DATABASE IF EXISTS `base`
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--------------
CREATE DATABASE `base`
DEFAULT CHARACTER SET `latin1`
DEFAULT COLLATE `latin1_general_ci`
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DROP TABLE IF EXISTS `tabone`
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CREATE TABLE `tabone`
( `id` integer unsigned NOT NULL auto_increment primary key,
`nom` varchar(255) NOT NULL,
`url` varchar(255) NOT NULL,
`type` varchar(255) NOT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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insert into `tabone` (`nom`,`url`,`type`) values
('DUPOND', 'www.monsite.fr/pagededupond', 'item'),
('image_dupond', 'www.monsite.fr/images/dupond.jpg', 'image')
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select * from tabone
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+----+--------------+----------------------------------+-------+
| id | nom | url | type |
+----+--------------+----------------------------------+-------+
| 1 | DUPOND | www.monsite.fr/pagededupond | item |
| 2 | image_dupond | www.monsite.fr/images/dupond.jpg | image |
+----+--------------+----------------------------------+-------+
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DROP TABLE IF EXISTS `tabtwo`
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CREATE TABLE `tabtwo`
( `id` integer unsigned NOT NULL auto_increment primary key,
`post_id` varchar(255) NOT NULL,
`key` varchar(255) NOT NULL,
`valeur` varchar(255) NOT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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insert into `tabtwo` (`post_id`,`key`,`valeur`) values
(1, 'adresse', '3 rue de la paix 75001 Paris'),
(1, 'info', '0'),
(1, 'image_id', '2')
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select * from tabtwo
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+----+---------+----------+------------------------------+
| id | post_id | key | valeur |
+----+---------+----------+------------------------------+
| 1 | 1 | adresse | 3 rue de la paix 75001 Paris |
| 2 | 1 | info | 0 |
| 3 | 1 | image_id | 2 |
+----+---------+----------+------------------------------+
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select t1.nom,
t2.valeur as adresse,
t4.url as 'url de l''image'
from tabone as t1
left outer join tabtwo as t2
on t2.post_id = t1.id
and t2.key = 'adresse'
left outer join tabtwo as t3
on t3.post_id = t1.id
and t3.key = 'image_id'
left outer join tabone as t4
on t4.id = cast(t3.valeur as unsigned)
where t1.nom like 'dupond'
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+--------+------------------------------+----------------------------------+
| nom | adresse | url de l'image |
+--------+------------------------------+----------------------------------+
| DUPOND | 3 rue de la paix 75001 Paris | www.monsite.fr/images/dupond.jpg |
+--------+------------------------------+----------------------------------+
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COMMIT
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SET AUTOCOMMIT = 1
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