Vladimir Sitnikov created CALCITE-3713:
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Summary: Remove column names from Project#digest
Key: CALCITE-3713
URL: https://issues.apache.org/jira/browse/CALCITE-3713
Project: Calcite
Issue Type: Bug
Components: core
Affects Versions: 1.21.0
Reporter: Vladimir Sitnikov
Assignee: Vladimir Sitnikov
Projects that differ with column names only are equivalent, so the planning
space can be reduced if field names do not participate in relation matching.
For instance, {{Project(input=rel#1,empid=$0)}} and
{{Project(input=rel#1,deptno=$0)}} are equivalent
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