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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4934) Provide automatic update and creation of index cardinality statistics (istat)
Date Tue, 07 Dec 2010 21:03:10 GMT
Provide automatic update and creation of index cardinality statistics (istat)
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                 Key: DERBY-4934
                 URL: https://issues.apache.org/jira/browse/DERBY-4934
             Project: Derby
          Issue Type: Task
          Components: SQL, Store
    Affects Versions: 10.8.0.0
            Reporter: Kristian Waagan
            Assignee: Kristian Waagan


Derby has been having problems with stale index cardinality statistics causing performance
degradation because the optimizer picks a sub-optimal plan.
This master JIRA issue tracks the addition of a feature that will automatically update and
create index cardinality statistics.

Note: For brevity I have decided to call the the feature istat during development :)

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