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Posted to derby-dev@db.apache.org by "Satheesh Bandaram (JIRA)" <de...@db.apache.org> on 2005/09/30 00:16:48 UTC
[jira] Closed: (DERBY-353) It is desirable to have IDENTITY_VAL_LOCAL() function return last recent user specified value or system generated value for BY DEFAULT identity columns.
[ http://issues.apache.org/jira/browse/DERBY-353?page=all ]
Satheesh Bandaram closed DERBY-353:
-----------------------------------
Fix has been checked in. Closing the bug.
> It is desirable to have IDENTITY_VAL_LOCAL() function return last recent user specified value or system generated value for BY DEFAULT identity columns.
> --------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-353
> URL: http://issues.apache.org/jira/browse/DERBY-353
> Project: Derby
> Type: Bug
> Components: SQL
> Versions: 10.1.1.0
> Environment: Generic
> Reporter: Satheesh Bandaram
> Assignee: V.Narayanan
> Attachments: patch353.diff
>
> Derby was recently enhanced to support BY DEFAULT identity column. While the behavior of this feature is not documented yet, I think, it is desirable for IDENTITY_VAL_LOCAL() function, that is used to retrieve last single statement insert value for identity column, to return user specified value for the default column.
> For GENERATED ALWAYS identity columns, this issue doesn't apply, since users can't provide a value. But for GENERATED BY DEFAULT identity columns, users can optionally specify a value. IDENTITY_VAL_LOCAL() function should return this value. Derby currently doesn't support this behavior.
> ij> create table tauto ( i int generated by default as identity, j int, k int);
> 0 rows inserted/updated/deleted
> ij> insert into tauto (j,k) values (1,1);
> 1 row inserted/updated/deleted
> ij> values identity_val_local();
> 1
> -------------------------------
> 1
> 1 row selected
> ij> insert into tauto (j,k) values (1,1);
> 1 row inserted/updated/deleted
> ij> values identity_val_local();
> 1
> -------------------------------
> 2
> 1 row selected
> ij> insert into tauto values (5,1,1);
> 1 row inserted/updated/deleted
> ij> values identity_val_local();
> 1
> -------------------------------
> 2 <<<<<<<<<<<<<<============= This needs be '5'
> 1 row selected
> ij> select * from tauto;
> I |J |K
> -----------------------------------
> 1 |1 |1
> 2 |1 |1
> 5 |1 |1
> 3 rows selected
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