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FOREIGN KEY Constraints in MySQL (NO ACTION, CASCADE, RESTRICT, SET NULL).

If new, INSERT. if existing, UPDATE. - MySQL (ON DUPLICATE KEY UPDATE)

If new, INSERT. if existing, UPDATE. - MySQL (ON DUPLICATE KEY UPDATE)

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You can insert multiple rows using a single query.

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MySQL CASE WHEN statements and IF statement example.

MySQL Database Dump

MySQL Database Dump using Command prompt.