alamb commented on issue #18320:
URL: https://github.com/apache/datafusion/issues/18320#issuecomment-3523343602

   > What kind of function simplification support do we have in DataFusion in 
general?
   
   We have a pretty substantial simplification library here 
https://github.com/apache/datafusion/tree/main/datafusion/optimizer/src/simplify_expressions
   
   
   > Something like simplify_predicate_function(info, args, op, const) to try 
to move the function call to the right side of the predicate expression:
   
   Maybe we could extend this:
   
https://github.com/apache/datafusion/blob/main/datafusion/optimizer/src/simplify_expressions/expr_simplifier.rs
   


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