Update AsyncScalarUDFImpl API to match ScalarUDFImpl API #16522
Description
Is your feature request related to a problem or challenge?
- Introduce Async User Defined Functions #14837 introduces
AsyncScalarUDFImplto run async functions 🥳 🦜 🚀
However, the API is slightly different than the ScalarUDFImpl which has evolved (specifically I am thinking about return_type instead of return_field, etc)
Here is the async definition
https://github.com/apache/datafusion/blob/cdaaef79e68665fe7f70f0864b0ff4e4a02eab9d/datafusion/expr/src/async_udf.rs#L87-L86
Describe the solution you'd like
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Describe alternatives you've considered
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Additional context
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