[teiid-issues] [JBoss JIRA] (TEIID-4320) Costing calculation issues

[Johnathon Lee (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-4320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Johnathon Lee reopened TEIID-4320:
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> Costing calculation issues
> --------------------------
>
>                 Key: TEIID-4320
>                 URL: https://issues.jboss.org/browse/TEIID-4320
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 7.7
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Critical
>             Fix For: 9.1, 8.13.6, 9.0.1, 8.7.8.6_2
>
>
> When determining if a dependent join should be used we'll rule out too many scenarios based upon requiring additional ndv info - when that can be determined from cardinality alone.   Also we are inappropriately assuming key usage in predicate costing - as it does not consider the node which may not represent a single table.



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