Insert and update a data block which is based on view--urgent help required
Hi experts,
I created a view(A_VIEW) which is based on a union select. I have created a data block A_VIW_BLOCK which is based on this view. I need to insert/update one of the base tablesfor A_VIEW through this data block. I also need to be able to make a query through all the fields in the view.
The questions are:
1.Can it be done at all?
2. What properties need to be set?
3. If can't be done, what the best approach to achieve this?
Thanks in advance!!
Michael
hi
try something like this.
CREATE TABLE demo_tab (
person_id NUMBER(3),
first_name VARCHAR2(20),
last_name VARCHAR2(20));
CREATE OR REPLACE VIEW upd_view AS
SELECT * FROM demo_tab;
INSERT INTO demo_tab
(person_id, first_name, last_name)
VALUES
(1, 'Daniel', 'Morgan');
INSERT INTO demo_tab
(person_id, first_name, last_name)
VALUES
(2, 'Helen', 'Lofstrom');
COMMIT;
SELECT * FROM upd_view;
UPDATE upd_view
SET person_id = person_id * 10;
SELECT * FROM upd_view;
desc user_updatable_columns
SELECT table_name, column_name, updatable, insertable, deletable
FROM user_updatable_columns
WHERE table_name IN (
SELECT view_name
FROM user_views);
SQL> create table dummy (f1 number);
Table created.
SQL> create view dummy_v
2 as
3 select f1 from dummy
4 union all
5 select f1 from dummy;
View created.
SQL> create trigger dummy_v_it
2 instead of insert
3 on dummy_v
4 for each row
5 begin
6 insert into dummy values (:NEW.f1);
7 end;
8 /
Trigger created.
SQL> insert into dummy_v values (1);
1 row created.
SQL> select * from dummy_v;
F1
1
1
SQL> select *
2 from user_updatable_columns
3 where table_name = 'DUMMY_V';
OWNER TABLE_NAME COLUMN_NAME UPD INS DEL
FORBESC DUMMY_V F1 NO NO NOforms settings.
Enforce Primary Key - No
Query Allowed - Yes
Query datasource Name - V_TSFDETAIL
Insert Allowed - Yes
Update Allowed - Yes
Delete Allowed - Yes
Locking Mode - Automatic
Key Mode - Automatic
do not forget to create synonyms.
hope this helps.
sarah
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