Connect by in R2 return strange result.

Question

Step to reproduce:
1.
create or replace type TST_OBJ_REC as object (
ID Integer,
Parent_ID Integer,
OValue Integer
);2.
create or replace type TST_OBJ_TBL as table of TST_OBJ_REC;3.
create table TST_TBL as select * from TABLE(TST_OBJ_TBL (
TST_OBJ_REC(ID => 1, Parent_ID => -1, OValue => 1),
TST_OBJ_REC(ID => 2, Parent_ID => 1, OValue => 2),
TST_OBJ_REC(ID => 3, Parent_ID => 2, OValue => 3)
));Query on table:
select * from tst_tbl a
  connect by prior a.id = a.parent_id
  start with a.id = 2All fine:
ID PARENT_ID OVALUE
     2     1     2
     3     2     3
Query from object:
select * from (TABLE(TST_OBJ_TBL (
TST_OBJ_REC(ID => 1, Parent_ID => -1, OValue => 1),
TST_OBJ_REC(ID => 2, Parent_ID => 1, OValue => 2),
TST_OBJ_REC(ID => 3, Parent_ID => 2, OValue => 3)
))) a
connect by prior a.id = a.parent_id
  start with a.id = 2Result different !!
ID PARENT_ID OVALUE
     2     1     null
     3     2     null
select A.* from (TABLE(TST_OBJ_TBL (
TST_OBJ_REC(ID => 1, Parent_ID => -1, OValue => 1),
TST_OBJ_REC(ID => 2, Parent_ID => 1, OValue => 2),
TST_OBJ_REC(ID => 3, Parent_ID => 2, OValue => 3)
))) a
connect by prior a.id = a.parent_idstart with a.id = 2
ID PARENT_ID OVALUE
     null     null     null
select A.*, connect_by_isleaf from (TABLE(TST_OBJ_TBL (
TST_OBJ_REC(ID => 1, Parent_ID => -1, OValue => 1),
TST_OBJ_REC(ID => 2, Parent_ID => 1, OValue => 2),
TST_OBJ_REC(ID => 3, Parent_ID => 2, OValue => 3)
))) a
connect by prior a.id = a.parent_id
  start with a.id = 2ID PARENT_ID OVALUE connect_by_isleaf
     null     null     null 1
And final
select id, parent_id, oValue,  connect_by_isleaf from (TABLE(TST_OBJ_TBL (
TST_OBJ_REC(ID => 1, Parent_ID => -1, OValue => 1),
TST_OBJ_REC(ID => 2, Parent_ID => 1, OValue => 2),
TST_OBJ_REC(ID => 3, Parent_ID => 2, OValue => 3)
))) a
connect by prior a.id = a.parent_id
  start with a.id = 2ID PARENT_ID OVALUE connect_by_isleaf
     2     1     2 0
     3     2     3 1
This behaviour normal ? In 11R1 All ok.
Edited by: D.Andreychik on 07.06.2010 7:38
Edited by: D.Andreychik on 07.06.2010 7:40

Answer 1

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