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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-2487) Enhance Derby with EXPLAIN Functionality
Date Thu, 23 Apr 2009 16:04:30 GMT

     [ https://issues.apache.org/jira/browse/DERBY-2487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bryan Pendleton updated DERBY-2487:
-----------------------------------

    Attachment: finalReview.diff

Attached 'finalReview.diff' is the patch I intend to commit over the weekend.

I've been through it and fixed a number of tab/space issues, a number of
javadoc issues, and tried to improve comments in a few places.

There's still a lot of work remaining, but I feel this is worthy of a commit to the trunk,
where we can gain further experience with the feature and continue to improve 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, finalReview.diff, incorporateTrunkChanges.diff,
refactorVisitor.diff, refactorVisitor.diff, removeSourceDepth.diff, RSProtocolNew.pdf, rts.xls,
small logical xplain schema.pdf, startRegressionTest.diff, startRegressionTest.diff, startUpgradeTests.diff,
updateRegressionTests.diff, updateRegressionTests.diff, usage.txt, userSchemaPrototyping.diff,
userSchemaPrototyping.diff, userSchemaPrototyping.diff, 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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