Deferring Referential Integrity Checks in MySQL Until Commit
As discussed in a previous question, it can be desirable to delay referential integrity checks until the commit of a transaction. This can be useful when inserting a large number of related records into multiple tables.
However, according to the MySQL documentation, "InnoDB checks foreign key constraints immediately; the check is not deferred to transaction commit." This means that any foreign key constraint violations will cause an error during the insertion process, even within a transaction.
This limitation prevents certain operations that rely on deferred constraint checking, such as deleting a record that refers to itself using a foreign key. Therefore, it is not possible to defer referential integrity checks until commit in MySQL using InnoDB.
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