Cross-database trigger in Mysql

Ja, dat kan. Je zou een procedure kunnen maken en deze in je trigger kunnen noemen. Voorbeeld procedure:

DELIMITER //

CREATE PROCEDURE delete(in table VARCHAR(300), in db VARCHAR(300), in id INT)
BEGIN

set @query0 = CONCAT('DELETE FROM ', new_db, '.', tabela, ' WHERE id=',id);

PREPARE select_query0 FROM @query0;
EXECUTE select_query0;
DEALLOCATE PREPARE select_query0;

END; //

DELIMITER ;

En dan om de trigger te maken:

CREATE TRIGGER del_trigger BEFORE DELETE ON table
  FOR EACH ROW BEGIN
    CALL delete(db, table, OLD.id); 
  END;