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https://issues.apache.org/jira/browse/FLINK-17484?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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godfrey he updated FLINK-17484:
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Component/s: (was: Table SQL / Planner)
> 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
> Reporter: Timo Walther
> Priority: Major
> Labels: auto-unassigned
>
> 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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