]
Steven Hawkins resolved TEIID-5420.
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Resolution: Done
Changed to a simpler assumption to use high ndv for the side of the join that is more
unique.
Costing can over estimate join cardinality when no keys nor ndv is
specified
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Key: TEIID-5420
URL:
https://issues.jboss.org/browse/TEIID-5420
Project: Teiid
Issue Type: Quality Risk
Components: Query Engine
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Fix For: 11.1, 11.0.1
The changes from TEIID-4885 allow for joins lacking all but cardinality information to
have their cardinality over-estimated. The estimate should be made more cautious by
default as that would be the most common case.