[ http://issues.apache.org/jira/browse/DERBY-353?page=all ]
V.Narayanan updated DERBY-353:
------------------------------
Attachment: (was: patch353.diff)
> 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
>
> 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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