[teiid-issues] [JBoss JIRA] (TEIID-5072) Generated keys should be passed from triggers

[Steven Hawkins (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-5072?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13466903#comment-13466903 ] 

Steven Hawkins commented on TEIID-5072:
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>  I did not understand the need for the generated_key? shouldn't this be automatic when the insert is finished Key group is populated?

No, it would not be automatic unless we are in the inherent case.  Here the trigger could contain n number of inserts and a view transformation that doesn't clearly map the pk value.  Rather than try to infer what insert(s) map appropriately, it's up to the user to associate the value.

> The next question is how can we push this Key back into JDBC resultset?

Do you mean Statement.getGeneratedKeys?  That would be the outcome of this yes.

> Generated keys should be passed from triggers
> ---------------------------------------------
>
>                 Key: TEIID-5072
>                 URL: https://issues.jboss.org/browse/TEIID-5072
>             Project: Teiid
>          Issue Type: Sub-task
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 10.0
>
>
> In the context of an update trigger we should be able to convey the generated keys to the caller.  In the case where only a single insert occurs, this should be automatic.  Otherwise we'll need functions/variables to get/set the generated keys in the procedure.  For example see the LAST_INSERT_ID function on mysql.



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