PHP ʖ²ἯTH º󍋼/A ingres_field_nullable Description ¾¯¸漯B ingres_field_nullable() returns TRUE if the field can be set to the NULL value and FALSE if it can't. See also ingres_query(), ingres_fetch_array(), ingres_fetch_object(), and ingres_fetch_row(). º󍋼/A ưµ㼯A ingres_field_name ɏһ¼¶ ingres_field_precision