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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 `mere_one`
--------------
--------------
CREATE TABLE `mere_one`
( `id` integer unsigned NOT NULL auto_increment primary key,
`mess` varchar(255) NOT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
--------------
--------------
insert into `mere_one` (`mess`) values
('un'),('deux'),('trois')
--------------
--------------
select * from `mere_one`
--------------
+----+-------+
| id | mess |
+----+-------+
| 1 | un |
| 2 | deux |
| 3 | trois |
+----+-------+
--------------
DROP TABLE IF EXISTS `mere_two`
--------------
--------------
CREATE TABLE `mere_two`
( `id` integer unsigned NOT NULL auto_increment primary key,
`info` varchar(255) NOT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
--------------
--------------
insert into `mere_two` (`info`) values
('eins'),('zwei'),('drei'),('one'),('two'),('three')
--------------
--------------
select * from `mere_two`
--------------
+----+-------+
| id | info |
+----+-------+
| 1 | eins |
| 2 | zwei |
| 3 | drei |
| 4 | one |
| 5 | two |
| 6 | three |
+----+-------+
--------------
DROP TABLE IF EXISTS `fille`
--------------
--------------
CREATE TABLE `fille`
( `id` integer unsigned NOT NULL auto_increment primary key,
`clef_one` integer unsigned NOT NULL,
`clef_two` integer unsigned NOT NULL,
CONSTRAINT `FK_ONE` FOREIGN KEY (`clef_one`) REFERENCES `mere_one` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT `FK_two` FOREIGN KEY (`clef_two`) REFERENCES `mere_two` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
--------------
--------------
insert into `fille` (`clef_one`,`clef_two`) values
(1,1),(1,4),
(2,2),(2,5),
(3,3),(3,6)
--------------
--------------
select * from `fille`
--------------
+----+----------+----------+
| id | clef_one | clef_two |
+----+----------+----------+
| 1 | 1 | 1 |
| 2 | 1 | 4 |
| 3 | 2 | 2 |
| 4 | 2 | 5 |
| 5 | 3 | 3 |
| 6 | 3 | 6 |
+----+----------+----------+
--------------
select t2.mess,
t3.info
from `fille` as t1
inner join `mere_one` as t2
on t2.id = t1.clef_one
inner join `mere_two` as t3
on t3.id = t1.clef_two
--------------
+-------+-------+
| mess | info |
+-------+-------+
| un | eins |
| un | one |
| deux | zwei |
| deux | two |
| trois | drei |
| trois | three |
+-------+-------+
--------------
COMMIT
--------------
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