lukekim commented on issue #17379:
URL: https://github.com/apache/datafusion/issues/17379#issuecomment-3391293194

   I took a shot at this, for Spic.ai's [ai async 
UDF](https://spiceai.org/blog/releases/v1.8.0#ai-sql-function-for-llm-integration-preview),
 that I can post as an example.
   
   ```sql
   SELECT ai('tell me a poem', 'gpt-4o', temperature => 50.0)
   ```
   
   The problem is it requires updates to every ScalarFunction UDF even if the 
additional parameters are varadic. I tried several methods to make it 100% 
compatible so no one has to change anything, but it seems like we'd have to 
change the interface to make it perform well.


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