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Results tagged with constraint
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user 77948
A declarative mechanism such as a check or foreign key that enforces some data integrity rule in a database.
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vote
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answer
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Should child comment be treated as separate table?
Cannot add or update a child row: a foreign key constraint fails
(`App`. … `comments`, CONSTRAINT `child_comment_FK` FOREIGN KEY (`parent`)
REFERENCES `comments` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION)"
Statement:
INSERT INTO comments SET
parent = :parent, …
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