[teiid-issues] [JBoss JIRA] (TEIID-2942) Enhanced sort join produces duplicate results

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-2942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins closed TEIID-2942.
---------------------------------



> Enhanced sort join produces duplicate results
> ---------------------------------------------
>
>                 Key: TEIID-2942
>                 URL: https://issues.jboss.org/browse/TEIID-2942
>             Project: Teiid
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: Query Engine
>    Affects Versions: 8.4
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Critical
>             Fix For: 8.8, 8.7.1
>
>
> In a plan where an enhanced sort join chooses to create an index on a child that should be SORT_DISTINCT, the distinct processing does not occur.
> For example this would occur with a query such as:
> select a.e1, b.e2 from pm1.g1 as a, (select e1, e2 from pm2.g2 union select e1, e2 from pm2.g2) as b where a.e1 = b.e1
> where the source does not support union.



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