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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-1160) Document use of SPACE_TABLE to tell for tables and indexes: a) the number of pages allocated b) the number of empty pages
Date Thu, 03 Dec 2009 21:46:20 GMT

     [ https://issues.apache.org/jira/browse/DERBY-1160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bryan Pendleton updated DERBY-1160:
-----------------------------------

    Attachment: rrefsyscsdiagtables.html
                docs2.diff

Thanks Kim and Knut.

I like the suggestion to include the column descriptions into the
main documentation, as it seems very useful for users of the
SYSCS_DIAG.SPACE_TABLE funtion. I think that information goes
nicely into the SYSCS_DIAG page in the Reference guide, so attached
is a second version of the patch, and an updated version of the ref
guide page in HTML.


> Document use of SPACE_TABLE to tell for tables and indexes: a) the number of pages allocated
 b) the number of empty pages
> --------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1160
>                 URL: https://issues.apache.org/jira/browse/DERBY-1160
>             Project: Derby
>          Issue Type: Improvement
>          Components: Documentation
>            Reporter: Stan Bradbury
>            Assignee: Bryan Pendleton
>         Attachments: cadminspace21579.html, docs.diff, docs2.diff, rrefsyscsdiagtables.html
>
>
> Very active systems would benefit from a documented way to determine how many empty pages
are allocated to an index or table in order to determine whether a COMPRESS_TABLE is worth
running.

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