FIELD_TYPE_NULL  2382 mysql/php_mysql.c 		case FIELD_TYPE_NULL:
FIELD_TYPE_NULL   767 mysqli/mysqli.c 	REGISTER_LONG_CONSTANT("MYSQLI_TYPE_NULL", FIELD_TYPE_NULL, CONST_CS | CONST_PERSISTENT);
FIELD_TYPE_NULL  2072 mysqlnd/mysqlnd.c 		case FIELD_TYPE_NULL: