[teiid-issues] [JBoss JIRA] Created: (TEIID-1497) misc subquery enhancements

[Steven Hawkins (JIRA)]

misc subquery enhancements
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                 Key: TEIID-1497
                 URL: https://issues.jboss.org/browse/TEIID-1497
             Project: Teiid
          Issue Type: Feature Request
          Components: Query Engine
    Affects Versions: 7.4
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
             Fix For: 7.4


Federated exists and scalar subqueries should be implicitly limited to not pull back extra results.

The subquery aware evaluator should have a small cache to reuse correlated results.

uncorrelated subqueryin and some forms of quantified comparison should be processed as dependent set criteria or use an indexed structure for teiid evaluation.

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