Query inheriting column values

Question

Hello,
I have a pair of tables in my DB to hold user access permissions to objects in the app.
I need to generate data that tells me what objects the user has access to, with inheritance.
Ex.:
create the tables
CREATE TABLE sii_pz_obj (
id_obj NUMBER(11,0) NOT NULL,
id_parent_obj NUMBER(11,0) NULL,
name_obj VARCHAR2(30) NULL,
CREATE TABLE sii_pz_obj_ac (
id_ac NUMBER(11,0) NOT NULL,
id_obj NUMBER(11,0) NOT NULL,
id_user NUMBER(11,0) NULL,
ALTER TABLE sii_pz_obj_ac
ADD CONSTRAINT sii_pz_obj_ac_fk_id_obj FOREIGN KEY (
id_obj
) REFERENCES sii_pz_obj (
id_obj
insert data
DECLARE
id_1 NUMBER;
id_2 NUMBER;
BEGIN
INSERT INTO sii_pz_obj (name_obj) VALUES ('root') returning id_obj INTO id_1;
INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 1 obj 1', id_1) returning id_obj INTO id_2;
INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 2 obj 1', id_2);
INSERT INTO sii_pz_obj_ac (id_obj, id_user) VALUES (id_2, 1);
INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 1 obj 3', id_1) returning id_obj INTO id_2;
INSERT INTO sii_pz_obj_ac (id_obj, id_user) VALUES (id_2, 1);
INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 2 obj 6', id_2);
INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 2 obj 7', id_2);
Dbms_Output.put_line('start at ' || id_1);
END;
select the data
SELECT o.ID_OBJ, o.NOME_OBJ, o.ID_PAI_OBJ,
oac.*
FROM sii_pz_obj o, sii_pz_obj_ac oac
WHERE oac.ID_OBJ(+) = o.ID_OBJ
AND o.id_obj >= 145
CONNECT BY PRIOR o.id_obj = o.id_pai_obj
START WITH id_pai_obj IS NULL;
With this the results should be something like:
ID_OBJ NAME_OBJ ID_PARENT_OBJ ID_USER
1 root
2 "level 1 obj 1" 1
3 "level 2 obj 1" 2 1
4 "level 1 obj 3" 1 1
5 "level 2 obj 6" 4
6 "level 2 obj 7" 4
I wanted the child rows to inherit the parent's permissions resulting in:
ID_OBJ NAME_OBJ ID_PARENT_OBJ ID_USER
1 root
2 "level 1 obj 1" 1
3 "level 2 obj 1" 2 1
4 "level 1 obj 3" 1 1
5 "level 2 obj 6" 4 1
6 "level 2 obj 7" 4 1
Is this somthing I can/should do in sql, or should I use the app's programming to fill in the missing permissions?
Tthanks

Answer 1

Indeed..... ;)
satyaki>
satyaki>drop table sii_pz_obj_ac;
Table dropped.
satyaki>drop table sii_pz_obj;
Table dropped.
satyaki>
satyaki>CREATE TABLE sii_pz_obj
  2   (
  3     id_obj NUMBER(11,0) NOT NULL,
  4     id_parent_obj NUMBER(11,0) NULL,
  5     name_obj VARCHAR2(30) NULL,
  6     CONSTRAINT sii_pz_obj_unk_id_obj UNIQUE(id_obj)
  7   );
Table created.
satyaki>
satyaki>CREATE TABLE sii_pz_obj_ac
  2   (
  3     id_ac NUMBER(11,0) NOT NULL,
  4     id_obj NUMBER(11,0) NOT NULL,
  5     id_user NUMBER(11,0) NULL,
  6     CONSTRAINT sii_pz_obj_ac_fk_id_obj
  7                FOREIGN KEY (id_obj)
  8                REFERENCES sii_pz_obj (id_obj)
  9   );
Table created.
satyaki>
satyaki>select * from sii_pz_obj;
no rows selected
satyaki>
satyaki>select * from sii_pz_obj_ac;
no rows selected
satyaki>
satyaki>
satyaki>set serveroutput on
satyaki>
satyaki>DECLARE
  2    id_1 NUMBER;
  3    id_2 NUMBER;
  4  BEGIN
  5    INSERT INTO sii_pz_obj (name_obj) VALUES ('root') returning id_obj INTO id_1;
  6    INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 1 obj 1', id_1) returning id_
obj INTO id_2;
  7    INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 2 obj 1', id_2);
  8    INSERT INTO sii_pz_obj_ac (id_obj, id_user) VALUES (id_2, 1);
  9    INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 1 obj 3', id_1) returning id_
obj INTO id_2;
10    INSERT INTO sii_pz_obj_ac (id_obj, id_user) VALUES (id_2, 1);
11    INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 2 obj 6', id_2);
12    INSERT INTO sii_pz_obj (name_obj, id_parent_obj) VALUES ('level 2 obj 7', id_2);
13 
14    Dbms_Output.put_line('start at ' || id_1);
15    --commit;
16  END;
17  /
DECLARE
ERROR at line 1:
ORA-01400: cannot insert NULL into ("ODSUSER1"."SII_PZ_OBJ"."ID_OBJ")
ORA-06512: at line 5Regards.
Satyaki De.