[teiid-issues] [JBoss JIRA] Resolved: (TEIID-339) Push down aggragate and distinct through union

Tue Jul 21 19:03:29 EDT 2009

     [ https://jira.jboss.org/jira/browse/TEIID-339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-339.
----------------------------------

    Resolution: Done

The pushing of distinct (union) is handled in RuleCollapseSource.  RulePushAggregates was expanded to cover decomposing over aggregates using nested inline view queries.  See TestAggregatePushdown and TestAggregateProcessing

> Push down aggragate and distinct through union
> ----------------------------------------------
>
>                 Key: TEIID-339
>                 URL: https://jira.jboss.org/jira/browse/TEIID-339
>             Project: Teiid
>          Issue Type: Task
>          Components: Query Engine
>    Affects Versions: 6.0.0
>            Reporter: Li Liang
>            Assignee: Steven Hawkins
>             Fix For: 6.2.0
>
>   Original Estimate: 2 days
>  Remaining Estimate: 2 days
>
> This is related to case 6652 and case 6653. It improves performance to push down aggragate and distinct through union. If this is done before 5.5.3 release, we will consider pulling the logics back to 5.5.3.

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