Ruidong Li created FLINK-7014:
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Summary: Expose isDeterministic interface to ScalarFunction and
TableFunction
Key: FLINK-7014
URL: https://issues.apache.org/jira/browse/FLINK-7014
Project: Flink
Issue Type: Improvement
Components: Table API & SQL
Reporter: Ruidong Li
Currently, the `isDeterministic` method of implementations of `SqlFuntion` are
always returning true, which cause inappropriate optimization in Calcite, such
as taking user's stateful UDF as a pure functional procedure.
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