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https://issues.apache.org/jira/browse/DERBY-2487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bryan Pendleton updated DERBY-2487:
-----------------------------------
Attachment: incorporateTrunkChanges.diff
I've been working on trying to bring the patch up to date with the current
trunk.
Since the time that this patch was originally posted, at least the following
other
patches have touched related parts of the code: DERBY-3037, DERBY-2661,
DERBY-1734, DERBY-3147, DERBY-2775, DERBY-3570, DERBY-3137, DERBY-2998.
There are probably other interactions that have changed since the patch was
first written.
I've made an attempt to revise the patch to bring it up to date so that it will
apply
cleanly against the current trunk, and will at least compile, and have attached
that
updated patch as 'incorporateTrunkChanges.diff'.
Although I think that this revised patch will at least compile, I very much
doubt that
it will run; I simply had to make too many changes to the patch to give me much
confidence that I haven't broken things.
But the exercise did give me a bunch more familiarity with the patch :)
And now I can start working with the code against the current trunk, stepping
through
it and getting more familiar with it.
> Enhance Derby with EXPLAIN Functionality
> ----------------------------------------
>
> Key: DERBY-2487
> URL: https://issues.apache.org/jira/browse/DERBY-2487
> Project: Derby
> Issue Type: New Feature
> Components: SQL
> Affects Versions: 10.2.2.0
> Reporter: Felix Beyer
> Assignee: Bryan Pendleton
> Priority: Minor
> Attachments: Derby physical XPLAIN schema.png,
> incorporateTrunkChanges.diff, RSProtocolNew.pdf, rts.xls, small logical
> xplain schema.pdf, usage.txt, xplain_patch_v1.txt, xplainClasses.pdf
>
>
> This enhancement extends Derby with EXPLAIN functions. Users want to have
> more feedback than they`re getting with the current RuntimeStatistics
> facility. This extension is based on the
> RuntimeStatistics/ResultSetStatistics functions / classes.
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