[teiid-issues] [JBoss JIRA] Updated: (TEIID-784) Enhance distinct set op processing

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins updated TEIID-784:
---------------------------------

    Fix Version/s: 9.0
                       (was: 8.0)


pushing to 9.0

> Enhance distinct set op processing
> ----------------------------------
>
>                 Key: TEIID-784
>                 URL: https://issues.jboss.org/browse/TEIID-784
>             Project: Teiid
>          Issue Type: Feature Request
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Minor
>             Fix For: 9.0
>
>
> The sort operation should be able to pushed for each set op child (distinct is already eligible for pushing, but typically won't be because there's no order by).  Also for union the sorted children should be fed directly into the second phase of sorting.
> All of this relies on the connector guaranteeing null ordering (TEIID-715 should be repurposed to cover the language enhancement of nulls first|last) 

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