danny0405 edited a comment on issue #1081: [CALCITE-2888] Enhance 
RexImplicationChecker to better handle cast
URL: https://github.com/apache/calcite/pull/1081#issuecomment-468884621
 
 
   -1, I think it's not a good idea to make so muck changes just to move 
constant reduction logic into RexImplicationChecker, because there is a 
rule/rules can do this.
   
   Actually for production, the RexExecutor is pluggable for users, so the cast 
is not much big problem.

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