[jira] Issue Comment Edited: (DERBY-4587) Add tools for improved analysis and understanding of query plans and execution statistics

["C.S. Nirmal J. Fernando (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-4587?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12848516#action_12848516 ] 

C.S. Nirmal J. Fernando edited comment on DERBY-4587 at 3/23/10 3:14 AM:
-------------------------------------------------------------------------

Hi Mike,

This is the license of PostgreSQL (http://wiki.postgresql.org/wiki/FAQ#What_is_the_license_of_PostgreSQL.3F), I attached a screen shot.

      was (Author: nirmal):
    Hi Mike,

This is the license of PostgreSQL (http://wiki.postgresql.org/wiki/FAQ#What_is_the_license_of_PostgreSQL.3F)
  
> Add tools for improved analysis and understanding of query plans and execution statistics
> -----------------------------------------------------------------------------------------
>
>                 Key: DERBY-4587
>                 URL: https://issues.apache.org/jira/browse/DERBY-4587
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL, Tools
>            Reporter: Bryan Pendleton
>            Assignee: Bryan Pendleton
>         Attachments: PostgreSQL license.jpg
>
>
> I think it would be great to see some work in the area of tools for helping
> with the analysis of complex query execution. Quite frequently, users of
> Derby have trouble comprehending (a) how their query is being translated
> into a query plan by the optimizer, and (b) what the execution-time resource
> usage of the various parts of the query is.
> There are low-level features in Derby which capture this information and
> record it, such as logQueryPlan, and the XPLAIN tables, but there is a lot
> of opportunity for designing higher-level tools which can process the query
> plan and execution statistics information and present it in a more
> comprehensible fashion. 

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.