How does MySQL handle errors during trigger execution?

Assuming that if an error occurs during trigger execution, MySQL can handle it as follows -

• If the BEFORE trigger fails, the execution will not execute accordingly OK.
• The BEFORE trigger is activated when an attempt is made to insert or modify a row, regardless of whether subsequent attempts are successful.
• Only execute AFTER triggers if any BEFORE triggers and row operations execute successfully.
• An error during a BEFORE or AFTER trigger causes the entire statement that caused the trigger to be called to fail.
• For transactional tables, statement failure should cause all changes performed by that statement to be rolled back. A failed trigger causes the statement to fail, so a failed trigger also causes a rollback. For non-transactional tables, such rollback cannot be performed, so although the statement fails, any changes performed before the point of error are still valid.

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