Steven Jacobs created ASTERIXDB-2404:
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Summary: AbstractGroupingProperty mishandles empty heads for
functional dependencies
Key: ASTERIXDB-2404
URL: https://issues.apache.org/jira/browse/ASTERIXDB-2404
Project: Apache AsterixDB
Issue Type: Improvement
Reporter: Steven Jacobs
If a group by uses variable $VAR, and there is a functional dependency of the
form:
[] -> $VAR
reduceGroupingColumns() will eliminate $VAR from the group by.
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