eejbyfeldt commented on issue #13244:
URL: https://github.com/apache/datafusion/issues/13244#issuecomment-2454737235

   > or add another pass to downcast all literals (where lossless) so that 
coercion is applied to the literal and therefore folded into the literal.
   
   Maybe I am not fully understanding the ask here, but does this not already 
exists as the optimizer pass 
[UnwrapCastInComparision](https://github.com/apache/datafusion/blob/85f92ef6be1d7364857a2c13fbb026d9e45406ea/datafusion/optimizer/src/unwrap_cast_in_comparison.rs#L38)?


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