[jira] Issue Comment Edited: (DERBY-4759) incoherence on IDENTITY_VAL_LOCAL after INSERT via SELECT

["RobertoC (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-4759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894360#action_12894360 ] 

RobertoC edited comment on DERBY-4759 at 8/1/10 5:17 AM:
---------------------------------------------------------

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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