[teiid-issues] [JBoss JIRA] (TEIID-5094) Is DISTINCT FROM evaluation with two null values

[Steven Hawkins (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-5094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475407#comment-13475407 ] 

Steven Hawkins commented on TEIID-5094:
---------------------------------------

> What is the expectation for update count here?

No the update count is unaffected by trigger logic, it is only based upon upon the number of rows affected from the view - https://teiid.gitbooks.io/documents/content/reference/Update_Procedures_Triggers.html

> Is DISTINCT FROM evaluation with two null values
> ------------------------------------------------
>
>                 Key: TEIID-5094
>                 URL: https://issues.jboss.org/browse/TEIID-5094
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 8.12
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Critical
>             Fix For: 10.0, 8.12.x-6.4, 9.3.4, 9.2.7
>
>
> 'row(null) is distinct from row(null)" evaluates to true when false is expected.



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