[teiid-issues] [JBoss JIRA] (TEIID-3237) Prevent processing cross joins with unknown cardinalities

Steven Hawkins (JIRA) issues at jboss.org
Mon Dec 1 13:54:39 EST 2014


Steven Hawkins created TEIID-3237:
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             Summary: Prevent processing cross joins with unknown cardinalities
                 Key: TEIID-3237
                 URL: https://issues.jboss.org/browse/TEIID-3237
             Project: Teiid
          Issue Type: Quality Risk
          Components: Query Engine
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
             Fix For: 8.10


The optimizer will select plans with cross joins (particularly with a parent dependent join) when the join is to be processed in Teiid and the cardinality of both sides of the join are unknown.

We should prefer non cross join plans in these scenarios.



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