[teiid-issues] [JBoss JIRA] (TEIID-3573) Infinispan-dsl-cache translator: Operator <> incorrectly handles NULL values

[Steven Hawkins (JIRA)]

    [ https://issues.jboss.org/browse/TEIID-3573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13093175#comment-13093175 ] 

Steven Hawkins commented on TEIID-3573:
---------------------------------------

> I'm thinking, as a workaround for now, turn off support of IS NULL and ISNOTNULL in the translator and let Teiid handle it.

Sounds fine.

So then until that bug and/or three value logic is addressed, then user query containing something like intnum<>1 could still return invalid results.  That implies we may need to turn negation support entirely for now.



> Infinispan-dsl-cache translator: Operator <> incorrectly handles NULL values
> ----------------------------------------------------------------------------
>
>                 Key: TEIID-3573
>                 URL: https://issues.jboss.org/browse/TEIID-3573
>             Project: Teiid
>          Issue Type: Bug
>          Components: Misc. Connectors
>    Affects Versions: 8.7.1
>            Reporter: Filip Elias
>            Assignee: Van Halbert
>
> Operator '<>' returns true for NULL <> 1
> Example:
> {code}
> select intKey,intNum from smallA where intNum<>1
> {code} 
> It returns also rows which have NULL in column intNum
> I believe that NULL <> 1 is not true in SQL.



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