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Posted to derby-dev@db.apache.org by "Yip Ng (JIRA)" <de...@db.apache.org> on 2006/08/03 23:18:14 UTC
[jira] Commented: (DERBY-1554) IDENTITY_VAL_LOCAL() returned value
is modified incorrectly by a multi-row INSERT statement.
[ http://issues.apache.org/jira/browse/DERBY-1554?page=comments#action_12425615 ]
Yip Ng commented on DERBY-1554:
-------------------------------
Hi Narayanan
I looked at the attached patch. It is returning the wrong result in the following case:
It should be null.
ij> create table t1 (i int generated by default as identity, j int);
0 rows inserted/updated/deleted
ij> create table t2 (i int);
0 rows inserted/updated/deleted
ij> insert into t1 (i) select i from t2;
0 rows inserted/updated/deleted
ij> values identity_val_local();
1
-------------------------------
0
1 row selected
> IDENTITY_VAL_LOCAL() returned value is modified incorrectly by a multi-row INSERT statement.
> --------------------------------------------------------------------------------------------
>
> Key: DERBY-1554
> URL: http://issues.apache.org/jira/browse/DERBY-1554
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.2.0.0
> Reporter: Daniel John Debrunner
> Assigned To: Yip Ng
> Fix For: 10.2.0.0
>
> Attachments: DERBY-1554.diff, DERBY-1554.stat
>
>
> Changes made in DERBY-353 break the documented behaviour of IDENTITY_VAL_LOCAL(). Now the returned value is modified when a multi-row insert is performed.
> IDENTITY_VAL_LOCAL() should not be updated when this occurs.
> For this script the last value returned should be 2 (as in 10.1) but in 10.2 is 4
> create table ta (a int, b int generated always as identity);
> insert into ta(a) values 100;
> values IDENTITY_VAL_LOCAL();
> insert into ta(a) values 200;
> values IDENTITY_VAL_LOCAL();
> insert into ta(a) values 300,400;
> values IDENTITY_VAL_LOCAL();
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