Timo Walther created FLINK-4825:
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Summary: Implement a RexExecutor that uses Flink's code generation
Key: FLINK-4825
URL: https://issues.apache.org/jira/browse/FLINK-4825
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Reporter: Timo Walther
The added {{ReduceExpressionRule}} leads to inconsistent behavior. Because some
parts of an expression are evalutated using Flink's code generation and some
parts use Calcite's code generation.
A very easy example: boolean expressions casted to string are represented as
"TRUE/FALSE" using Calcite and "true/false" using Flink.
I propose to implement the RexExecutor interface and forward the calls to
Flink's code generation. Additional improvements in order to be more standard
compliant could be solved in new Jira issues.
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