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https://issues.apache.org/jira/browse/DERBY-4759?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kristian Waagan closed DERBY-4759.
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Resolution: Invalid
Closing as invalid, since the behavior seen is described as expected behavior
in the documentation.
IDENTITY_VAL_LOCAL seems to be a source of confusion. I tried to find a
definition of the expected behavior (i.e. in a spec), but most of my findings
were related to DB2 or Derby.
Maybe using (Prepared)Statement.getGeneratedKeys() instead is an option?
(remember to specify RETURN_GENERATED_KEYS when creating the statement)
Note also that support for sequences was added in Derby 10.6.
> incoherence on IDENTITY_VAL_LOCAL after INSERT via SELECT
> ---------------------------------------------------------
>
> Key: DERBY-4759
> URL: https://issues.apache.org/jira/browse/DERBY-4759
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.6.1.0
> Environment: Win XP - JDK 1.6.0_20
> Reporter: RobertoC
>
> wrong IDENTITY_VAL_LOCAL() after "SELECT ... INSERT" (see below example)
> -- replicable on derby 10.6.1000000.938214
> CREATE TABLE email2folder (
> id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY NOT NULL,
> idemail bigint NOT NULL,
> idfolder integer NOT NULL
> );
> INSERT INTO email2folder(idemail,idfolder) VALUES(10,20);
> INSERT INTO email2folder(idemail,idfolder) VALUES(30,40);
> -- WARN: disconnect from DB and reconnect
> insert into email2folder(idemail,idfolder)
> select idemail,idfolder from email2folder where id<2;
> -- expected: 1 row inserted
> -- obtained: 1 row inserted (OK)
>
> VALUES IDENTITY_VAL_LOCAL();
> -- expected result: 3
> -- obtained result: NULL (ERROR!)
> -- note: if a previous "standard INSERT" is executed before INSERT via
> SELECT, the IDENTITY_VAL report the previous
> -- generated PK, possible producing data-incoherence in the application
> execution
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