DonnyZone opened a new pull request #1252: [CALCITE-3087] AggregateOnProjectToAggregateUnifyRule cannot ignore Project when its Mapping breaks ordering URL: https://github.com/apache/calcite/pull/1252 As described in [CALCITE-3087](https://issues.apache.org/jira/browse/CALCITE-3087), AggregateOnProjectToAggregateUnifyRule cannot ignore Project when its Mapping breaks ordering. This PR: (1) adds validation in MutableAggreagte, as that in Aggregate, (2) adds a Project after UnifyAggregate to recover the field order and ensure the result's rowtype when the mapping breaks ordering.
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