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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 `mdl_user`
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CREATE TABLE `mdl_user`
( `id` integer unsigned NOT NULL auto_increment primary key,
`name` varchar(255) NOT NULL
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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DROP TABLE IF EXISTS `mdl_data`
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CREATE TABLE `mdl_data`
( `id` integer unsigned NOT NULL auto_increment primary key,
`id_user` integer unsigned NOT NULL,
`data` varchar(255) NOT NULL,
CONSTRAINT `FK_USER` FOREIGN KEY (`id_user`) REFERENCES `mdl_user` (`id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB
DEFAULT CHARSET=`latin1` COLLATE=`latin1_general_ci`
ROW_FORMAT=COMPRESSED
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insert into `mdl_user` (`name`) values ('un')
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set @val = last_insert_id()
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insert into `mdl_data` (`id_user`,`data`) values (@val, 'one')
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insert into `mdl_data` (`id_user`,`data`) values (@val, 'eins')
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insert into `mdl_data` (`id_user`,`data`) values (@val, 'uno')
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insert into `mdl_user` (`name`) values ('deux')
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set @val = last_insert_id()
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insert into `mdl_data` (`id_user`,`data`) values (@val, 'two')
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insert into `mdl_data` (`id_user`,`data`) values (@val, 'zwei')
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insert into `mdl_data` (`id_user`,`data`) values (@val, 'due')
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select * from `mdl_user`
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+----+------+
| id | name |
+----+------+
| 1 | un |
| 2 | deux |
+----+------+
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select * from `mdl_data`
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+----+---------+------+
| id | id_user | data |
+----+---------+------+
| 1 | 1 | one |
| 2 | 1 | eins |
| 3 | 1 | uno |
| 4 | 2 | two |
| 5 | 2 | zwei |
| 6 | 2 | due |
+----+---------+------+
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select t2.id,
t2.name,
t1.data
from `mdl_data` as t1
inner join `mdl_user` as t2
on t2.id = t1.id_user
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+----+------+------+
| id | name | data |
+----+------+------+
| 1 | un | one |
| 1 | un | eins |
| 1 | un | uno |
| 2 | deux | two |
| 2 | deux | zwei |
| 2 | deux | due |
+----+------+------+
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COMMIT
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