[teiid-issues] [JBoss JIRA] Resolved: (TEIID-1676) Decomposed aggregates results can be wrong

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-1676?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-1676.
-----------------------------------

    Resolution: Done


Updated the rule to only allow 1 grouping to be pushed that contains a cardinality dependent agg.

> Decomposed aggregates results can be wrong
> ------------------------------------------
>
>                 Key: TEIID-1676
>                 URL: https://issues.jboss.org/browse/TEIID-1676
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 7.0
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Critical
>             Fix For: 7.4.1, 7.5
>
>
> Decomposed aggregates results can be wrong when a cardinality dependent aggregate is computed against one side of a join and the other has a grouping pushed - and the staging grouping cols remove meaningful duplicate join results.
> See TestAggregateProcessing.testJira1621 for an example of this situation.  The current expected results are wrong.

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