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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-1257) Enhance Derby optimizer and execution model to support effective use of multiple indexes on one table. Derby currently can use one index on a table and there are many situations where using multiple indexes on a table could improve performance significant
Date Mon, 29 Jun 2009 23:45:47 GMT

     [ https://issues.apache.org/jira/browse/DERBY-1257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dag H. Wanvik updated DERBY-1257:
---------------------------------

    Component/s: SQL

> Enhance Derby optimizer and execution model to support effective use of multiple indexes
on one table. Derby currently can use one index on a table and there are many situations where
using multiple indexes on a table could improve performance significant
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1257
>                 URL: https://issues.apache.org/jira/browse/DERBY-1257
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 10.2.1.6
>            Reporter: Manjula Kutty
>            Priority: Minor
>
> Enhance Derby optimizer and execution model to support effective use of multiple indexes
on one table. Derby currently can use one index on a table and there are many situations where
using multiple indexes on a table could improve performance significantly. Please see the
discussion at http://article.gmane.org/gmane.comp.apache.db.derby.devel/16099 

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