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https://issues.apache.org/jira/browse/DERBY-534?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13769373#comment-13769373
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ASF subversion and git services commented on DERBY-534:
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Commit 1523965 from [~knutanders] in branch 'code/trunk'
[ https://svn.apache.org/r1523965 ]
DERBY-534: Support use of the WHEN clause in CREATE TRIGGER statements
Add the WHEN clause syntax to the grammar and wire it together with the
existing partial code for the WHEN clause.
Make RowTriggerExecutor and StatementTriggerExecutor execute the WHEN
clause and use the result to decide whether the trigger action should
be executed.
Add some basic positive tests for the currently supported subset of the
functionality.
> 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, 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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