Помогите плиз
есть view
CREATE VIEW V_GROUP_OBJECT_RIGHTS(
ROLES_ID,
GROUPS_ID,
OBJECT_ID,
CANVIEW,
CANEDIT,
CANDELETE)
AS
select distinct
gr.roles_id,
gr.groups_id,
gr.object_id,
(select 1 from acc_rights ar where ar.roles_id=gr.roles_id and ar.groups_id=gr.groups_id and ar.object_id=gr.object_id and ar.RIGHTS=1) as canView,
(select 1 from acc_rights ar where ar.roles_id=gr.roles_id and ar.groups_id=gr.groups_id and ar.object_id=gr.object_id and ar.RIGHTS=2) as canEdit,
(select 1 from acc_rights ar where ar.roles_id=gr.roles_id and ar.groups_id=gr.groups_id and ar.object_id=gr.object_id and ar.RIGHTS=3) as canDelete
from v_group_object_roles gr;

формируется из разных таблиц
хочу на апдэйт этой view вызвать тригер
а система ругается

This column cannot be updated because it is derived from an SQL function or expression.
attempted update of read-only column.

Кас в IB реализовать instead как в Оракле