shehabgamin commented on issue #15914:
URL: https://github.com/apache/datafusion/issues/15914#issuecomment-3055982838

   > An update here is that we are waiting for one or two more good example PRs 
and then we'll turn the community on porting
   > 
   > If anyone wants to take a look / help out with 
[#16612](https://github.com/apache/datafusion/issues/16612) / 
[#16580](https://github.com/apache/datafusion/pull/16580) that would be super 
helpful
   > 
   > It might be something that codeing agents / claude code / etc can do 
easily 🤔
   
   Would it be easier to pick a couple of functions that Sail has already 
implemented?
   
   
[next_day](https://github.com/lakehq/sail/blob/main/crates/sail-plan/src/extension/function/datetime/spark_next_day.rs)
 and 
[last_day](https://github.com/lakehq/sail/blob/main/crates/sail-plan/src/extension/function/datetime/spark_last_day.rs)
 are simple functions.
   
   There are tests in DataFusion ready to go as well!
   - 
https://github.com/apache/datafusion/blob/76ff87b132b62edac207bb1105836a52d32d269e/datafusion/sqllogictest/test_files/spark/datetime/next_day.slt
   - 
https://github.com/apache/datafusion/blob/76ff87b132b62edac207bb1105836a52d32d269e/datafusion/sqllogictest/test_files/spark/datetime/last_day.slt
   
   
   
   


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