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Posted to derby-dev@db.apache.org by "Harshvardhan Gupta (JIRA)" <ji...@apache.org> on 2017/08/25 15:06:00 UTC

[jira] [Commented] (DERBY-6942) Utilise additional statistics for selectivity estimates.

    [ https://issues.apache.org/jira/browse/DERBY-6942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16141740#comment-16141740 ] 

Harshvardhan Gupta commented on DERBY-6942:
-------------------------------------------

Bryan,

I am summarizing the remaining work required on releasing the changes done as part of Derby-6940 and Derby-6942.

Test cases are required for addition of new statistics and the integration of integer data type with the additional new stats. Also the patch doesn't contain documentation changes that need to be done for each of the above new functionalities.

Also, what do you think of integrating additional data types such as varchar etc and releasing all the changes together or doing it iteratively over time? 

> Utilise additional statistics for selectivity estimates.
> --------------------------------------------------------
>
>                 Key: DERBY-6942
>                 URL: https://issues.apache.org/jira/browse/DERBY-6942
>             Project: Derby
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Harshvardhan Gupta
>            Assignee: Harshvardhan Gupta
>            Priority: Minor
>         Attachments: DERBY-6942_2.diff, DERBY-6942.diff, z12.txt, z13.txt
>
>




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