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From "Yip Ng (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-1554) IDENTITY_VAL_LOCAL() returned value is modified incorrectly by a multi-row INSERT statement.
Date Sat, 05 Aug 2006 07:21:14 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1554?page=all ]

Yip Ng updated DERBY-1554:
--------------------------

    Attachment: derby1554trunkstat02.txt
                derby1554trunkdiff02.txt

Submitting follow up patch for DERBY-1554.  This patch contains the fix + the correct master
outputs.  There were quite a number of diffs in the master files, so I had to go throught
the regression results to make sure they are correct.  I also ran the autoincrement script
against DB2 to double check the results.  Appreciate if someone can review this.  The patch
is in derby1554trunkdiff02.txt.  

> 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, derby1554trunkdiff01.txt, derby1554trunkdiff02.txt,
derby1554trunkstat01.txt, derby1554trunkstat02.txt
>
>
> 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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