[teiid-issues] [JBoss JIRA] (TEIID-4332) Enhance costing to better guess at ndv
Steven Hawkins created TEIID-4332:
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Summary: Enhance costing to better guess at ndv
Key: TEIID-4332
URL: https://issues.jboss.org/browse/TEIID-4332
Project: Teiid
Issue Type: Quality Risk
Components: Query Engine
Reporter: Steven Hawkins
Assignee: Steven Hawkins
Fix For: 9.1
Our logic for determining ndv is mostly ad hoc and varies greatly depending upon the
position in the plan. This needs to be more standardized and based upon consistent
assumptions - also additional information such as predicates and foreign keys should
influence the calculation.
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