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https://issues.apache.org/jira/browse/DERBY-534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13771676#comment-13771676
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ASF subversion and git services commented on DERBY-534:
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Commit 1524645 from [~knutanders] in branch 'code/trunk'
[ https://svn.apache.org/r1524645 ]
DERBY-534: Support use of the WHEN clause in CREATE TRIGGER statements
Move common logic for executing WHEN clause and trigger action to the
base class GenericTriggerExecutor. In addition to reducing code
duplication, the change makes row triggers reuse the prepared
statement for the WHEN clause (same as it already does for the trigger
action), and it makes statement triggers not leave the before and
after result sets open if the WHEN clause evaluates to false.
> Support use of the WHEN clause in CREATE TRIGGER statements
> -----------------------------------------------------------
>
> Key: DERBY-534
> URL: https://issues.apache.org/jira/browse/DERBY-534
> Project: Derby
> Issue Type: Improvement
> Components: SQL
> Reporter: Kristian Waagan
> Assignee: Knut Anders Hatlen
> Priority: Minor
> Labels: derby_triage10_11
> Attachments: derby-534-01-a-syntax.diff,
> derby-534-02-a-refactor.diff, parser.diff, WhenClause.html, WhenClause.html
>
>
> Support use of the WHEN clause in CREATE TRIGGER statements. The clause is
> described in the SQL standard (2003) in chapter "11.39 <trigger definition>"
> under "<triggered action>".
> There are traces in the code that suggests some work has been done on this
> earlier. If anyone knows something about this, please add a comment to this
> issue.
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