mirror of
https://github.com/lucaspalomodevelop/SQL-Querys-Unterricht.git
synced 2026-03-13 07:59:37 +00:00
104 lines
2.5 KiB
SQL
104 lines
2.5 KiB
SQL
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CREATE TABLE `fach` (
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`id` int(11) NOT NULL,
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`name` varchar(50) NOT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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INSERT INTO `fach` (`id`, `name`) VALUES
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(1, 'Mathe'),
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(2, 'Informatik');
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CREATE TABLE `klasse` (
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`id` int(11) NOT NULL,
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`name` varchar(50) NOT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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INSERT INTO `klasse` (`id`, `name`) VALUES
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(1, 'FI195'),
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(2, 'SO195');
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CREATE TABLE `lehrer` (
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`id` int(11) NOT NULL,
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`name` varchar(50) NOT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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INSERT INTO `lehrer` (`id`, `name`) VALUES
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(1, 'Herbert'),
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(2, 'Uschi');
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CREATE TABLE `schueler` (
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`id` int(11) NOT NULL,
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`name` varchar(50) NOT NULL,
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`klasse_id` int(11) NOT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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INSERT INTO `schueler` (`id`, `name`, `klasse_id`) VALUES
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(1, 'Lucas', 1),
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(2, 'Bastian', 1),
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(3, 'Antonia', 2),
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(4, 'Klaus-Günther', 2);
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CREATE TABLE `unterricht` (
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`fach_id` int(11) NOT NULL,
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`lehrer_id` int(11) NOT NULL,
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`klassen_id` int(11) NOT NULL,
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`Zeitpunkt` datetime NOT NULL,
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`id` int(11) NOT NULL
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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INSERT INTO `unterricht` (`fach_id`, `lehrer_id`, `klassen_id`, `Zeitpunkt`, `id`) VALUES
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(1, 2, 1, '2022-03-22 08:00:00', 1),
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(1, 1, 2, '2022-03-22 08:00:00', 2),
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(2, 1, 1, '2022-03-22 09:30:00', 3),
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(2, 2, 2, '2022-03-22 09:30:00', 4);
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ALTER TABLE `fach`
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ADD PRIMARY KEY (`id`);
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ALTER TABLE `klasse`
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ADD PRIMARY KEY (`id`);
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ALTER TABLE `lehrer`
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ADD PRIMARY KEY (`id`);
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ALTER TABLE `schueler`
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ADD PRIMARY KEY (`id`),
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ADD KEY `klasse_id` (`klasse_id`);
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ALTER TABLE `unterricht`
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ADD PRIMARY KEY (`id`),
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ADD KEY `lehrer_id` (`lehrer_id`),
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ADD KEY `fach_id` (`fach_id`),
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ADD KEY `klassen_id` (`klassen_id`);
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ALTER TABLE `fach`
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MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=3;
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ALTER TABLE `klasse`
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MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=3;
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ALTER TABLE `lehrer`
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MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=3;
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ALTER TABLE `schueler`
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MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=5;
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ALTER TABLE `unterricht`
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MODIFY `id` int(11) NOT NULL AUTO_INCREMENT, AUTO_INCREMENT=5;
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ALTER TABLE `schueler`
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ADD CONSTRAINT `schueler_ibfk_1` FOREIGN KEY (`klasse_id`) REFERENCES `klasse` (`id`);
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ALTER TABLE `unterricht`
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ADD CONSTRAINT `unterricht_ibfk_1` FOREIGN KEY (`lehrer_id`) REFERENCES `lehrer` (`id`),
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ADD CONSTRAINT `unterricht_ibfk_2` FOREIGN KEY (`fach_id`) REFERENCES `fach` (`id`),
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ADD CONSTRAINT `unterricht_ibfk_3` FOREIGN KEY (`klassen_id`) REFERENCES `klasse` (`id`);
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COMMIT;
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