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https://issues.apache.org/jira/browse/DERBY-4204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708882#action_12708882
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Knut Anders Hatlen commented on DERBY-4204:
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Committed the patch to trunk with revision 774281.
Bryan, it should be OK to add a regression test based on XPLAIN to trunk now,
either as part of this issue or as a separate issue.
I'll leave this issue open until the fix has been backported.
> Runtime statistics not collected on re-execution of statement
> -------------------------------------------------------------
>
> Key: DERBY-4204
> URL: https://issues.apache.org/jira/browse/DERBY-4204
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.3.1.4
> Reporter: Knut Anders Hatlen
> Assignee: Knut Anders Hatlen
> Priority: Minor
> Attachments: d4204.diff, repro.sql, test.diff
>
>
> Runtime statistics are only collected the first time an insert/update/delete
> statement is executed. The behaviour changed between Derby 10.2.2.0 and Derby
> 10.3.1.4, so this was likely introduced by DERBY-827.
> Reported on derby-dev:
> http://mail-archives.apache.org/mod_mbox/db-derby-dev/200904.mbox/%[email protected]%3e
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