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https://issues.apache.org/jira/browse/DERBY-4759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894360#action_12894360
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RobertoC edited comment on DERBY-4759 at 8/1/10 5:17 AM:
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Ignore this bug.
This is a "feature": :((
http://db.apache.org/derby/docs/10.6/ref/ref-single.html#rrefidentityvallocal
was (Author: ice1972):
http://db.apache.org/derby/docs/10.6/ref/ref-single.html#rrefidentityvallocal
> 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: JDBC
> Affects Versions: 10.6.1.0
> Environment: Win XP - JDK 1.6.0_20
> Reporter: RobertoC
> Priority: Blocker
>
> 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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