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https://issues.apache.org/jira/browse/DERBY-3948?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648743#action_12648743
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Rick Hillegas commented on DERBY-3948:
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Tests ran cleanly for me. Committed derby-3948-01-aa-beforeTriggers.diff at
subversion revision 718707.
> Don't allow references to generated columns in the NEW transition variables
> of triggered actions of BEFORE triggers
> -------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-3948
> URL: https://issues.apache.org/jira/browse/DERBY-3948
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.5.0.0
> Reporter: Rick Hillegas
> Attachments: derby-3948-01-aa-beforeTriggers.diff
>
>
> Thanks to Dag for finding this restriction in the SQL Standard, part 2,
> section 11.39, SR 12 c) I see this provision:
> 12) If BEFORE is specified, then:
> :
> c) The <triggered action> shall not contain a <field reference> that
> references a field in the new transition variable corresponding to a
> generated column of T.
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