[teiid-issues] [JBoss JIRA] (TEIID-5987) salesforce self join involving implicit null check on parentid field not working

[Steven Hawkins (Jira)]

    [ https://issues.redhat.com/browse/TEIID-5987?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14239918#comment-14239918 ] 

Steven Hawkins commented on TEIID-5987:
---------------------------------------

Actually this is a problem introduced by TEIID-4880 as it's converting this self join scenario into just a table scan.  I'm not sure if the logic there is not accounting for this case or if there's a metadata issue.

> salesforce self join involving implicit null check on parentid field not working
> --------------------------------------------------------------------------------
>
>                 Key: TEIID-5987
>                 URL: https://issues.redhat.com/browse/TEIID-5987
>             Project: Teiid
>          Issue Type: Bug
>          Components: Salesforce Connector
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>            Priority: Critical
>             Fix For: 15.0, 13.1.2, 14.0.1
>
>   Original Estimate: 4 hours
>  Remaining Estimate: 4 hours
>
> I'm not sure about the full scope of this issue.  In testing TEIIDSB-213 I can see that a query such as:
> select a1.id from Account a1 inner join account a2 on a1.parentid = a2.id
> which results in the source query with the implicit null check:
> SELECT Id FROM Account WHERE ParentId != NULL
> actually returns results, but no are expected.
> The explicit non-join query query
> select a1.id from Account a1 where a1.parentid is not null
> result in:
> SELECT Id FROM Account WHERE ParentId != NULL
> but returns no results
> So there is something in the join handling that is not working as expected.



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