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https://issues.apache.org/jira/browse/DERBY-6938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16046055#comment-16046055
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Harshvardhan Gupta commented on DERBY-6938:
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Hi Bryan,
I am trying to understand the cardinality estimates Derby Optimizer makes in
the presence of joins, I am currently doing more experiments starting from
joins for 2 tables and then moving to more levels of joins similar to those
present in job query dataset. Along with this I am examining the code and will
share the information that I obtain here.
Regards,
Vardhan,
> Obtain cardinality estimates and true estimates for base tables as well as
> for intermediate results for queries involving multiple joins.
> -------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-6938
> URL: https://issues.apache.org/jira/browse/DERBY-6938
> Project: Derby
> Issue Type: Sub-task
> Components: SQL
> Reporter: Harshvardhan Gupta
> Assignee: Harshvardhan Gupta
> Attachments: explain.txt
>
>
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