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START TRANSACTION
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DROP DATABASE IF EXISTS `base`
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CREATE DATABASE IF NOT EXISTS `base`
DEFAULT CHARACTER SET `latin1`
DEFAULT COLLATE `latin1_general_ci`
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DROP TABLE IF EXISTS `pere`
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CREATE TABLE `pere`
( `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
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DROP TABLE IF EXISTS `mere`
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CREATE TABLE `mere`
( `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
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DROP TABLE IF EXISTS `fille`
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CREATE TABLE `fille`
( `id` integer unsigned NOT NULL auto_increment primary key,
`lib` varchar(255) NOT NULL,
`clef_pere` integer unsigned NOT NULL,
`clef_mere` integer unsigned NOT NULL,
CONSTRAINT `FK_PERE` FOREIGN KEY (`clef_pere`) REFERENCES `pere` (`id`) ON DELETE CASCADE ON UPDATE CASCADE,
CONSTRAINT `FK_MERE` FOREIGN KEY (`clef_mere`) REFERENCES `mere` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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DROP PROCEDURE IF EXISTS `remplir`
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CREATE PROCEDURE `remplir` (IN _mess text,
IN _info text,
IN _lib text)
BEGIN
DECLARE _flag integer default null;
DECLARE _pere integer unsigned default null;
DECLARE _mere integer unsigned default null;
set _flag = (select 1 from `pere` where mess = _mess);
if (_flag = 1) then
set _pere = (select id from `pere` where mess = _mess);
else insert into `pere` (`mess`) values (_mess);
set _pere = last_insert_id();
end if;
set _flag = (select 1 from `mere` where info = _info);
if (_flag = 1) then
set _mere = (select id from `mere` where info = _info);
else insert into `mere` (`info`) values (_info);
set _mere = last_insert_id();
end if;
insert into `fille` (`lib`,`clef_pere`,`clef_mere`) values (_lib,_pere,_mere);
END
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commit
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call `remplir` ('papa 1', 'maman 1', 'enfant 1')
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call `remplir` ('papa 2', 'maman 2', 'enfant 2')
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call `remplir` ('papa 1', 'maman 2', 'enfant 3')
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call `remplir` ('papa 2', 'maman 1', 'enfant 4')
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call `remplir` ('papa 1', 'maman 1', 'enfant 5')
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select * from `pere`
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+----+--------+
| id | mess |
+----+--------+
| 1 | papa 1 |
| 2 | papa 2 |
+----+--------+
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select * from `mere`
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+----+---------+
| id | info |
+----+---------+
| 1 | maman 1 |
| 2 | maman 2 |
+----+---------+
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select * from `fille`
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+----+----------+-----------+-----------+
| id | lib | clef_pere | clef_mere |
+----+----------+-----------+-----------+
| 1 | enfant 1 | 1 | 1 |
| 2 | enfant 2 | 2 | 2 |
| 3 | enfant 3 | 1 | 2 |
| 4 | enfant 4 | 2 | 1 |
| 5 | enfant 5 | 1 | 1 |
+----+----------+-----------+-----------+
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select t2.mess as père,
t3.info as mère,
t1.lib as enfant
from `fille` as t1
inner join `pere` as t2
on t2.id = t1.clef_pere
inner join `mere` as t3
on t3.id = t1.clef_mere
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+--------+---------+----------+
| père | mère | enfant |
+--------+---------+----------+
| papa 1 | maman 1 | enfant 1 |
| papa 1 | maman 1 | enfant 5 |
| papa 2 | maman 1 | enfant 4 |
| papa 1 | maman 2 | enfant 3 |
| papa 2 | maman 2 | enfant 2 |
+--------+---------+----------+
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COMMIT
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