yanlin-Lynn opened a new pull request #1503: [CALCITE-3408] Add support for enumerable intersect/minus all URL: https://github.com/apache/calcite/pull/1503 Currently, [EnumerableIntersect](https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/adapter/enumerable/EnumerableIntersect.java#L37) and [EnumerableMinus](https://github.com/apache/calcite/blob/master/core/src/main/java/org/apache/calcite/adapter/enumerable/EnumerableMinus.java#L37) with true value for `all` is not supported. Thus, exception occurs when trying to execute sql contains `intersect all` or `except all`, please refer to [CALCITE-3408](https://issues.apache.org/jira/browse/CALCITE-3408) for more details. This PR tries to add support for enumerable intersect/minus all.
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