[jira] [Created] (FLINK-17484) Enable type coercion

[Shang Yuanchun (Jira)]

Timo Walther created FLINK-17484:
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             Summary: Enable type coercion
                 Key: FLINK-17484
                 URL: https://issues.apache.org/jira/browse/FLINK-17484
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / API, Table SQL / Planner
            Reporter: Timo Walther
            Assignee: Timo Walther


Calcite supports better inference for untyped NULL literals by enabling type coercion. This is currently still disabled in Flink SQL. We should think about enabling it. A first research around this topic has shown that this feature is still experimental. Maybe we only support a custom type coercion.



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