[teiid-issues] [JBoss JIRA] Resolved: (TEIID-1008) Correlated subquery handling for Oracle/MySQL

[Steven Hawkins (JIRA)]

     [ https://issues.jboss.org/browse/TEIID-1008?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Steven Hawkins resolved TEIID-1008.
-----------------------------------

    Resolution: Deferred


Marking as deferred until it a fix is required.  With subquery optimization this should be an even rarer issue.

> Correlated subquery handling for Oracle/MySQL
> ---------------------------------------------
>
>                 Key: TEIID-1008
>                 URL: https://issues.jboss.org/browse/TEIID-1008
>             Project: Teiid
>          Issue Type: Quality Risk
>          Components: Connector API, Query Engine
>    Affects Versions: 6.0.0
>            Reporter: Steven Hawkins
>            Assignee: Steven Hawkins
>             Fix For: 7.4
>
>
> Most version of Oracle and MySQL only support one level of nesting for correlated reference appearing in non-inlineview subqueries.  These queries are perfectly legal in Teiid and sources such as PostgreSQL.  To work around we'll need to add a new capability and planner logic to prevent pushdown.

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