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