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From "Daniel John Debrunner (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-573) Provider support for optimizer overrides in Derby.
Date Fri, 07 Oct 2005 16:13:48 GMT
    [ http://issues.apache.org/jira/browse/DERBY-573?page=comments#action_12331607 ] 

Daniel John Debrunner commented on DERBY-573:

Thinking more about this DERBY-HINTS was a bad name since you are providing overrides, not
hints. The generic  DERBY-PROPERTIES seems a good choice, that could support hints being added
in the future by the name of the property containing the name 'hint'.

> Provider support for optimizer overrides in Derby.
> --------------------------------------------------
>          Key: DERBY-573
>          URL: http://issues.apache.org/jira/browse/DERBY-573
>      Project: Derby
>         Type: New Feature
>   Components: SQL
>     Versions:
>     Reporter: Mamta A. Satoor
>     Assignee: Mamta A. Satoor
>  Attachments: optimizeroverrides.html
> Derby's query optimizer usually makes the best choice of join order and access path.
The default join strategy ususally works the best too. However, there are some cases in which
user may want to override the optimizer or the default values. Providing support for optimizer
overrides will allow users to hand-tune the optimizer for queries. 

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