[ http://issues.apache.org/jira/browse/DERBY-573?page=all ]

Mamta A. Satoor updated DERBY-573:
----------------------------------

    Summary: Provide support for optimizer overrides in Derby.  (was: Provider 
support for optimizer overrides in Derby.)

> Provide 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: 10.2.0.0
>     Reporter: Mamta A. Satoor
>     Assignee: Mamta A. Satoor
>  Attachments: derby573OptimierOverrides110805.txt, optimizeroverrides.html, 
> 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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