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| --------------
START TRANSACTION
--------------
--------------
DROP DATABASE IF EXISTS `base`
--------------
--------------
CREATE DATABASE IF NOT EXISTS `base`
DEFAULT CHARACTER SET `latin1`
DEFAULT COLLATE `latin1_general_ci`
--------------
--------------
DROP TABLE IF EXISTS `tabone`
--------------
--------------
CREATE TABLE `tabone`
( `id` integer unsigned NOT NULL auto_increment primary key,
`user_id` integer unsigned NOT NULL,
`meta_key` varchar(255) NOT NULL,
`meta_value` varchar(255) NOT NULL,
index `idx` (`user_id`)
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
--------------
--------------
INSERT INTO `tabone` (`user_id`,`meta_key`,`meta_value`) VALUES
(1, 'nom', 'Toto'),
(1, 'codepostal', '66000'),
(1, 'ville', 'Perpignan'),
(2, 'nom', 'Tata'),
(2, 'codepostal', '21000'),
(2, 'ville', 'Dijon'),
(3, 'nom', 'Titi'),
(3, 'codepostal', '39000'),
(3, 'ville', 'Lons-le-saunier'),
(4, 'nom', 'Tutu'),
(4, 'codepostal', '75000'),
(4, 'ville', 'Paris'),
(5, 'nom', 'Tete'),
(5, 'codepostal', '13000'),
(5, 'ville', 'Marseille')
--------------
--------------
select * from `tabone`
--------------
+----+---------+------------+-----------------+
| id | user_id | meta_key | meta_value |
+----+---------+------------+-----------------+
| 1 | 1 | nom | Toto |
| 2 | 1 | codepostal | 66000 |
| 3 | 1 | ville | Perpignan |
| 4 | 2 | nom | Tata |
| 5 | 2 | codepostal | 21000 |
| 6 | 2 | ville | Dijon |
| 7 | 3 | nom | Titi |
| 8 | 3 | codepostal | 39000 |
| 9 | 3 | ville | Lons-le-saunier |
| 10 | 4 | nom | Tutu |
| 11 | 4 | codepostal | 75000 |
| 12 | 4 | ville | Paris |
| 13 | 5 | nom | Tete |
| 14 | 5 | codepostal | 13000 |
| 15 | 5 | ville | Marseille |
+----+---------+------------+-----------------+
--------------
DROP TABLE IF EXISTS `tabtwo`
--------------
--------------
CREATE TABLE `tabtwo`
( `user_id` integer unsigned NOT NULL primary key,
`nom` varchar(255) NULL DEFAULT NULL,
`codepostal` integer NULL DEFAULT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
--------------
--------------
DROP PROCEDURE IF EXISTS `init`
--------------
--------------
CREATE PROCEDURE `init` ()
DETERMINISTIC
NO SQL
BEGIN
DECLARE _userid INTEGER DEFAULT NULL;
DECLARE _nom VARCHAR(255) DEFAULT NULL;
DECLARE _codepostal INTEGER DEFAULT NULL;
DECLARE _fin INTEGER DEFAULT 1;
DECLARE _tab CURSOR FOR SELECT user_id, max(case meta_key when 'nom' then meta_value end) as nom,
max(case meta_key when 'codepostal' then meta_value end) as codepostal
FROM `tabone` group by user_id order by nom;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET _fin = 0;
OPEN _tab;
FETCH _tab INTO _userid, _nom, _codepostal;
WHILE (_fin)
DO
INSERT INTO `tabtwo` (`user_id`,`nom`,`codepostal`) VALUES (_userid, _nom, _codepostal);
FETCH _tab INTO _userid, _nom, _codepostal;
END WHILE;
CLOSE _tab;
END
--------------
--------------
call `init` ()
--------------
--------------
select * from `tabtwo`
--------------
+---------+------+------------+
| user_id | nom | codepostal |
+---------+------+------------+
| 1 | Toto | 66000 |
| 2 | Tata | 21000 |
| 3 | Titi | 39000 |
| 4 | Tutu | 75000 |
| 5 | Tete | 13000 |
+---------+------+------------+
--------------
DROP TRIGGER IF EXISTS `ajouter`
--------------
--------------
CREATE TRIGGER `ajouter`
BEFORE insert ON `tabone`
FOR EACH ROW
BEGIN
DECLARE _nom VARCHAR(255) DEFAULT NULL;
DECLARE _codepostal INTEGER DEFAULT NULL;
SET _nom = (select nom from `tabtwo` where user_id = new.user_id);
SET _codepostal = (select codepostal from `tabtwo` where user_id = new.user_id);
IF new.meta_key = 'nom' then replace into `tabtwo` (`user_id`,`nom`,`codepostal`) values (new.user_id, new.meta_value,_codepostal); END IF;
IF new.meta_key = 'codepostal' then replace into `tabtwo` (`user_id`,`nom`,`codepostal`) values (new.user_id,_nom,new.meta_value); END IF;
END
--------------
--------------
INSERT INTO `tabone` (`user_id`,`meta_key`,`meta_value`) VALUES
(10, 'nom', 'alfred'),
(12, 'codepostal', '32000'),
(10, 'codepostal', '17000'),
(12, 'nom', 'jean')
--------------
--------------
select * from `tabtwo`
--------------
+---------+--------+------------+
| user_id | nom | codepostal |
+---------+--------+------------+
| 1 | Toto | 66000 |
| 2 | Tata | 21000 |
| 3 | Titi | 39000 |
| 4 | Tutu | 75000 |
| 5 | Tete | 13000 |
| 10 | alfred | 17000 |
| 12 | jean | 32000 |
+---------+--------+------------+
--------------
COMMIT
--------------
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