16 lines
588 B
MySQL
16 lines
588 B
MySQL
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CREATE TABLE IF NOT EXISTS `song` (
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`song_id` INTEGER NOT NULL,
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`artist` TEXT NOT NULL,
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`title` TEXT NOT NULL,
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PRIMARY KEY (`song_id` AUTOINCREMENT),
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UNIQUE (`artist`, `title`) );
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CREATE TABLE IF NOT EXISTS `history` (
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`start_at` TEXT NOT NULL DEFAULT (strftime('%Y-%m-%d %H:%M:%f', 'now')),
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`song_id` INTEGER NOT NULL,
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`listeners` INTEGER NOT NULL,
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`max_listeners` INTEGER NOT NULL,
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PRIMARY KEY (`start_at`),
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FOREIGN KEY (`song_id`) REFERENCES `song` (`song_id`)
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ON UPDATE CASCADE ON DELETE CASCADE );
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