[jira] [Created] (FLINK-7014) Expose isDeterministic interface to ScalarFunction and TableFunction

[Shang Yuanchun (Jira)]

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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