Constraint Error

Question

Table Name: Table_1
ID     INTEGER;     --     FK REFERENCE TO TABLE_2
NAME     VARCHAR2(100) NOT NULL
OrderId     INTEGER NOT NULL;
Table Name: Table_2
ID     INTEGER NOT NULL;
OrderId     INTEGER NOT NULL;
UNIQUE INDEX FOR (ID,OrderId);
While Updating the Table_1 ID i get the following error
UPDATE Table_1 SET ID = 100 WHERE ID = 71;
integrity constraint(####.ConstraintName) violated - parent key not found.
But when i select the Id 100, I found the record exist and could not understand the problem.
Someone help me in this.
Thanks,
Symon

Answer 1

Are you sure?
Is FK of Table_1 consisted with only ID?
I think it is consisted with ID and OrderId.
Please post results to do follows
select
  OrderID
,count(decode(ID,100,1)) cnt_id_100
,count(decode(ID,71,1))  cnt_id_71
from Table_2
where OrderID in
  (select OrderID from Table_1 where ID=71)
group by OrderID
;count(decode,a,b) -> count(decode(a,b,1))
Message was edited by:
ushitaki