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https://issues.apache.org/jira/browse/TRAFODION-1654?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Qifan Chen resolved TRAFODION-1654.
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    Resolution: Fixed

> Need to check the UECs on predicate-less key columns when consider MDAM
> -----------------------------------------------------------------------
>
>                 Key: TRAFODION-1654
>                 URL: https://issues.apache.org/jira/browse/TRAFODION-1654
>             Project: Apache Trafodion
>          Issue Type: Bug
>          Components: sql-cmp
>            Reporter: Qifan Chen
>            Assignee: Qifan Chen
>              Labels: performance
>
> When some key columns are predicate less, the current heuristics does not 
> consider the UECs of these key columns, especially when the UECs are high. 
> A better heuristics is to compute the product of all such UECs and assure the 
> product is within a threshold. 



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