jayzhan211 commented on PR #14283:
URL: https://github.com/apache/datafusion/pull/14283#issuecomment-2613810630

   > > ```rust
   > > let then_expr = try_cast(Arc::clone(e), &batch.schema(), 
return_type.clone())?;
   > > ```
   > > 
   > > 
   > >     
   > >       
   > >     
   > > 
   > >       
   > >     
   > > 
   > >     
   > >   
   > > I think type handling should be handled correctly in logical layer 
before physical expression creation, so this doesn't make sense to me. Even 
checking type in `try_new` is also not ideal (although I think we didn't block 
the check for safety). We have done such type handling and coercion in logical 
layer already, we should try our best to avoid doing it twice in physical layer.
   > 
   > @jayzhan211 in the Comet use case we do not have a DataFusion logical plan 
but are instead translating Spark physical plans to DataFusion physical plans.
   
   How do you handle types mismatch issue? Does Comet has another type handling 
logic to find the correct types for datafusion physical plan?


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