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Remove primary key CollectionEbookId
Add a SortOrder to preserve the order of the collections listed in content.opf for ebook.php, e.g., for To the Lighthouse: № 15 in the Modern Library’s 100 Best Novels set. Part of the Encyclopædia Britannica’s Great Books of the Western World set. № 2 in the BBC’s 100 Greatest British Novels (2015) set.
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3 changed files with 9 additions and 9 deletions
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CREATE TABLE `CollectionEbooks` (
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`CollectionEbookId` int(10) unsigned NOT NULL AUTO_INCREMENT,
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`EbookId` int(10) unsigned NOT NULL,
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`CollectionId` int(10) unsigned NOT NULL,
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`SequenceNumber` int(10) unsigned NULL,
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PRIMARY KEY (`CollectionEbookId`),
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`SortOrder` tinyint(3) unsigned NOT NULL,
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UNIQUE KEY `idxUnique` (`EbookId`,`CollectionId`)
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) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
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