[teiid-issues] [JBoss JIRA] (TEIID-4459) Convert project semi-joins to (dependent) join queries

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-4459?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-4459.
-----------------------------------
    Resolution: Done


Added the initial work that is hint driven or requires the use of the system property subqueryUnnestDefault=true.  The odata logic was updated to automatically add the hint.

> Convert project semi-joins to (dependent) join queries
> ------------------------------------------------------
>
>                 Key: TEIID-4459
>                 URL: https://issues.jboss.org/browse/TEIID-4459
>             Project: Teiid
>          Issue Type: Quality Risk
>          Components: Query Engine
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 9.1
>
>
> In many situations subqueries in the where clause can be planned as semi-joins.  The same logic should be updated to handle the select clause.  
> This will also help ensure better performance with odata generated array_agg queries.



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