mihaibudiu commented on code in PR #4959:
URL: https://github.com/apache/calcite/pull/4959#discussion_r3292161221


##########
core/src/main/java/org/apache/calcite/rex/RexCall.java:
##########
@@ -228,8 +228,13 @@ private boolean digestWithType() {
       return operands.get(0).isAlwaysFalse();
     case IS_NOT_FALSE:
     case IS_TRUE:
-    case CAST:
       return operands.get(0).isAlwaysTrue();
+    case CAST:

Review Comment:
   This is because these test which you wrote do not respect the new 
precondition of the function. Do these tests correspond to a situation you have 
observed in practice? If so, can you supply an end-to-end test which 
illustrates this case?
   
   If not, a solution is to simply delete these tests, since they do not 
exercise a "real" possible path.



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