Timo Walther created FLINK-17373:
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Summary: Support the NULL type for function calls
Key: FLINK-17373
URL: https://issues.apache.org/jira/browse/FLINK-17373
Project: Flink
Issue Type: Sub-task
Components: Table SQL / API, Table SQL / Planner
Reporter: Timo Walther
Assignee: Timo Walther
According to FLIP-37, the null type is used to represent untyped NULL literals.
Those are in particular useful when it comes to passing them to a function
call. The new type inference of FLIP-65 is able to process call such as
`f(NULL)`.
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