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Posted to derby-dev@db.apache.org by "Knut Anders Hatlen (JIRA)" <ji...@apache.org> on 2014/07/16 00:43:05 UTC
[jira] [Created] (DERBY-6665) Violation of deferred foreign key not
detected on commit
Knut Anders Hatlen created DERBY-6665:
-----------------------------------------
Summary: Violation of deferred foreign key not detected on commit
Key: DERBY-6665
URL: https://issues.apache.org/jira/browse/DERBY-6665
Project: Derby
Issue Type: Bug
Components: SQL
Affects Versions: 10.11.0.0
Reporter: Knut Anders Hatlen
See the following script:
{noformat}
ij version 10.11
ij> connect 'jdbc:derby:memory:db;create=true';
ij> create table t1(x int primary key);
0 rows inserted/updated/deleted
ij> create table t2(x int primary key);
0 rows inserted/updated/deleted
ij> create table t3(x int, constraint fk1 foreign key (x) references t1 initially deferred, constraint fk2 foreign key (x) references t2 initially deferred);
0 rows inserted/updated/deleted
ij> insert into t1 values 1;
1 row inserted/updated/deleted
ij> autocommit off;
ij> insert into t3 values 1;
1 row inserted/updated/deleted
ij> insert into t2 values 1;
1 row inserted/updated/deleted
ij> delete from t1;
1 row inserted/updated/deleted
ij> commit;
ij> select * from t1;
X
-----------
0 rows selected
ij> select * from t2;
X
-----------
1
1 row selected
ij> select * from t3;
X
-----------
1
1 row selected
{noformat}
Since T3.X contains a value (1) that is not present in T1, the foreign key FK1 is violated, and the COMMIT statement should have failed.
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