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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: startRegressionTest.diff
Attached 'startRegressionTest.diff' patch differs in two
meaningful respects from the previous patch:
- it incorporates the workaround that Knut suggested
for DERBY-4062; namely, to directly construct SQLInteger
objects for the integer data values rather than calling
DataValueFactory.getDataValue(). This seems like a
reasonable approach to me, and means that this work won't
be blocked while we discuss the preferred approach to
take with DERBY-4062.
- it includes an initial, incomplete, partial new regression test
to be run as part of the derbylang junit test suites. At this
point, I'm just writing the most simple tests of the new
feature, trying to ensure that in some straightforward
scenarios, reasonable values are captured and written
to the new system tables. So far, this testing seems to be
going well and I think it should be possible to continue
adding additional regression tests along these lines to this suite.
I haven't re-run the full regression suite in a while, so it's possible
that this patch breaks some of the tests, although hopefully not
since I haven't done much to the patch other than the two changes
mentioned above.
> 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, startRegressionTest.diff, updateRegressionTests.diff,
> updateRegressionTests.diff, 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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