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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 `projet`
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--------------
CREATE TABLE `projet`
( `idProjet` integer unsigned NOT NULL auto_increment primary key,
`nomProjet` varchar(255) NOT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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INSERT INTO `projet` (`nomProjet`) VALUES
('projet 1'),('projet 2'),('projet 3'),('projet 4'),('projet 5')
--------------
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select * from `projet`
--------------
+----------+-----------+
| idProjet | nomProjet |
+----------+-----------+
| 1 | projet 1 |
| 2 | projet 2 |
| 3 | projet 3 |
| 4 | projet 4 |
| 5 | projet 5 |
+----------+-----------+
--------------
DROP TABLE IF EXISTS `ressource`
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CREATE TABLE `ressource`
( `idProjet` integer unsigned NOT NULL,
`idEtape` integer unsigned NOT NULL,
`lib` varchar(255) NOT NULL,
PRIMARY KEY (`idProjet`,`idEtape`),
CONSTRAINT `FK_Projet` FOREIGN KEY (`idProjet`) REFERENCES `projet` (`idProjet`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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INSERT INTO `ressource` (`idProjet`,`idEtape`,`lib`) VALUES
(1, 1, 'etape 1-1'),(1, 2, 'etape 1-2'),(1, 3, 'etape 1-3'),
(2, 1, 'etape 2-1'),(2, 2, 'etape 2-2'),(2, 3, 'etape 2-3'),(2, 4, 'etape 2-4'),(2, 5, 'etape 2-5'),
(3, 1, 'etape 3-1'),(3, 2, 'etape 3-2'),(3, 3, 'etape 3-3'),(3, 4, 'etape 3-4'),(3, 5, 'etape 3-5'),(3, 6, 'etape 3-6'),
(4, 1, 'etape 4-1'),(4, 2, 'etape 4-2'),
(5, 1, 'etape 5-1'),(5, 2, 'etape 5-2'),(5, 3, 'etape 5-3'),(5, 4, 'etape 5-4')
--------------
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select * from `ressource`
--------------
+----------+---------+-----------+
| idProjet | idEtape | lib |
+----------+---------+-----------+
| 1 | 1 | etape 1-1 |
| 1 | 2 | etape 1-2 |
| 1 | 3 | etape 1-3 |
| 2 | 1 | etape 2-1 |
| 2 | 2 | etape 2-2 |
| 2 | 3 | etape 2-3 |
| 2 | 4 | etape 2-4 |
| 2 | 5 | etape 2-5 |
| 3 | 1 | etape 3-1 |
| 3 | 2 | etape 3-2 |
| 3 | 3 | etape 3-3 |
| 3 | 4 | etape 3-4 |
| 3 | 5 | etape 3-5 |
| 3 | 6 | etape 3-6 |
| 4 | 1 | etape 4-1 |
| 4 | 2 | etape 4-2 |
| 5 | 1 | etape 5-1 |
| 5 | 2 | etape 5-2 |
| 5 | 3 | etape 5-3 |
| 5 | 4 | etape 5-4 |
+----------+---------+-----------+
--------------
select t2.nomProjet,
t1.lib
from `ressource` as t1
inner join `projet` as t2
on t2.idProjet = t1.iDprojet
where t1.idEtape = ( select max(t3.idEtape)
from `ressource` as t3
where t3.idProjet = t1.idProjet
)
--------------
+-----------+-----------+
| nomProjet | lib |
+-----------+-----------+
| projet 1 | etape 1-3 |
| projet 2 | etape 2-5 |
| projet 3 | etape 3-6 |
| projet 4 | etape 4-2 |
| projet 5 | etape 5-4 |
+-----------+-----------+
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COMMIT
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SET AUTOCOMMIT = 1
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