yanlin-Lynn opened a new pull request #1399: [CALCITE-3281] Support mixed Primitive types for BinaryExpression evaluate method. URL: https://github.com/apache/calcite/pull/1399 Currently, the value of [expression0 and expression1](https://github.com/apache/calcite/blob/master/linq4j/src/main/java/org/apache/calcite/linq4j/tree/BinaryExpression.java#L26) must be the same type. Otherwise we might a ClassCastException, as shown in JIRA [CALCITE-3281](https://issues.apache.org/jira/browse/CALCITE-3281). This PR is an improvement to support using different primitive types for expression0 and expression1 of BinaryExpression, so that, make it suite for evaluate in more cases.
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