Important Points About MySQL INSERT ON DUPLICATE KEY UPDATE
- The INSERT ON DUPLICATE KEY UPDATE statement in MySQL allows you to insert new rows into a table. If a duplicate key violation occurs, it updates existing rows instead of throwing an error.
- This feature is designed to be efficient and easy to use. It is more efficient than executing a separate SELECT statement followed by an INSERT or UPDATE.
- This statement is a convenient way to ensure data integrity.
- Use this statement with caution, as it might lead to unintended data overwrites if not used properly.
MySQL INSERT ON DUPLICATE KEY UPDATE Statement
MySQL INSERT ON DUPLICATE KEY UPDATE statement is an extension to the INSERT statement, that if the row being inserted already exists in the table, it will perform a UPDATE operation instead.
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