A junior data engineer on your team has implemented the following code block: MERGE INTO events USING new_events ON events . event_id = new_events . event_id WHEN NOT MATCHED THEN INSERT * The view new_events contains a batch of records with the same schema as the events Delta table. The event_id field serves as a unique key for this table. When this query is executed, what will happen with new records that have the same event_id as an existing record?