Liya Fan created CALCITE-4287:
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Summary: Fix a bug in AggregateJoinRemoveRule
Key: CALCITE-4287
URL: https://issues.apache.org/jira/browse/CALCITE-4287
Project: Calcite
Issue Type: Bug
Components: core
Reporter: Liya Fan
Assignee: Liya Fan
In {{AggregateJoinRemoveRule#onMatch}}, the logic of checking if the aggregate
references any columns from the other side is incorrect.
For example, given an aggregate on a left join, the logic checks if the
aggregate references any columns from the right side. If the aggregate happens
to references the last column of the left input, the current implementation
will make a wrong decision to skip the rule match.
This will miss opportunities of simplifying the plan.
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