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From "C.S. Nirmal J. Fernando (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4587) Add tools for improved analysis and understanding of query plans and execution statistics
Date Tue, 29 Jun 2010 17:47:51 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

C.S. Nirmal J. Fernando updated DERBY-4587:
-------------------------------------------

    Attachment: DERBY-4587-tool-7-b.diff
                DERBY-4587-tool-test2.diff
                vanilla_html.xsl

Hi All,

This patch (7-b) created after modifying the code such that it creates 
an element for query executed, added more scan related details, 
and shows scan related details only in scan nodes.

I'm attaching the modified test file as well (test2).

Also the modified "vanilla_html.xsl" such that it displays query executed,
as well.

Thanks.

> Add tools for improved analysis and understanding of query plans and execution statistics
> -----------------------------------------------------------------------------------------
>
>                 Key: DERBY-4587
>                 URL: https://issues.apache.org/jira/browse/DERBY-4587
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL, Tools
>            Reporter: Bryan Pendleton
>            Assignee: C.S. Nirmal J. Fernando
>         Attachments: basic_html-2.2.jpg, basic_html-2.jpg, basic_html-3.jpg, Derby Query
Plan Screen Shot 2.jpg, DERBY-4587-tool-2.diff, DERBY-4587-tool-3.diff, DERBY-4587-tool-4.diff,
DERBY-4587-tool-5.diff, DERBY-4587-tool-6.diff, DERBY-4587-tool-7-b.diff, DERBY-4587-tool-7.diff,
DERBY-4587-tool-test1.diff, DERBY-4587-tool-test2.diff, DERBY-4587-tool.diff, Derby_Query_Plan_Screen_Shot.jpg,
PostgreSQL license.jpg, Read_Me.txt, screenshot-1.jpg, screenshot-2.jpg, screenshot-3.jpg,
Simple HTML View (Pure XSL).jpg, Source.rar, test.xml, test4.xsl, vanilla_html.xsl, vanilla_html.xsl,
vanilla_html.xsl, xml_doc_screenshot.jpg
>
>
> I think it would be great to see some work in the area of tools for helping
> with the analysis of complex query execution. Quite frequently, users of
> Derby have trouble comprehending (a) how their query is being translated
> into a query plan by the optimizer, and (b) what the execution-time resource
> usage of the various parts of the query is.
> There are low-level features in Derby which capture this information and
> record it, such as logQueryPlan, and the XPLAIN tables, but there is a lot
> of opportunity for designing higher-level tools which can process the query
> plan and execution statistics information and present it in a more
> comprehensible fashion. 

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