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From "Alan Burlison (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-4289) Docs could be clearer on what SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE does with statistics
Date Wed, 24 Jun 2009 16:49:07 GMT

    [ https://issues.apache.org/jira/browse/DERBY-4289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12723625#action_12723625
] 

Alan Burlison commented on DERBY-4289:
--------------------------------------

It makes a degree of sense that is the case - SYSCS_UTIL.SYSCS_COMPRESS_TABLE creates a new
table, so presumably it creates new indexes & stats at the same time.  It's not a big
problem if SYSCS_INPLACE_COMPRESS_TABLE doesn't update the stats, but it would be helpful
if the docs actually stated that explicitly,

> Docs could be clearer on what SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE does with statistics
> ------------------------------------------------------------------------------------------
>
>                 Key: DERBY-4289
>                 URL: https://issues.apache.org/jira/browse/DERBY-4289
>             Project: Derby
>          Issue Type: Improvement
>          Components: Documentation
>    Affects Versions: 10.5.1.1
>         Environment: Solaris
>            Reporter: Alan Burlison
>            Priority: Minor
>
> The documentation for SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE says:
> "Use the SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE system procedure to reclaim unused,
allocated space in a table and its indexes."
> The documentation for SYSCS_UTIL.SYSCS_COMPRESS_TABLE says in addition:
> "The SYSCS_UTIL.SYSCS_COMPRESS_TABLE system procedure updates statistics on all indexes
as part of the index rebuilding process."
> I'm assuming SYSCS_UTIL.SYSCS_INPLACE_COMPRESS_TABLE also rebuilds the statistics, but
the documentation doesn't day either way.

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