[teiid-issues] [JBoss JIRA] (TEIID-2669) In subquery with no values returns wrong result

Fri Sep 20 11:02:04 EDT 2013

     [ https://issues.jboss.org/browse/TEIID-2669?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-2669.
-----------------------------------

    Resolution: Done

Our consideration of three-value null handling for the left expression was trumping the proper handling of empty in/quantified comparison.  Corrected the rewriter and evaluator.  

> In subquery with no values returns wrong result
> -----------------------------------------------
>
>                 Key: TEIID-2669
>                 URL: https://issues.jboss.org/browse/TEIID-2669
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 7.4
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Critical
>             Fix For: 8.6
>
>
> If an in subquery is entered such that no rows will be returned and it is not pushed down, then the rewriter will incorrectly convert the in predicate to an is not null check.

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