[teiid-issues] [JBoss JIRA] (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 resolved TEIID-784.
----------------------------------
    Fix Version/s:     (was: 9.0)
       Resolution: Deferred


This is no longer needed for just distinct processing as that is performed with a tree.  There is still the case of having an ordered distinct set op that could be enhanced in this way, but I'll mark that as deferred.

> 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
>            Priority: Minor
>
> 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) 



--
This message was sent by Atlassian JIRA
(v6.4.11#64026)