SIGNAL specialty\n      SET MESSAGE_TEXT = \'An error occurred\';\n  ELSE\n    SIGNAL SQLSTATE \'01000\'\n      SET MESSAGE_TEXT = \'A warning occurred\', MYSQL_ERRNO = 1000;\n    SIGNAL SQLSTATE \'45000\'\n      SET MESSAGE_TEXT = \'An error occurred\', MYSQL_ERRNO = 1001;\n  END IF;\nEND;\n','https://dev.mysql.com/doc/refman/8.0/en/signal.html');