mihaibudiu commented on code in PR #4350:
URL: https://github.com/apache/calcite/pull/4350#discussion_r2068008986


##########
core/src/main/java/org/apache/calcite/rex/RexPermuteInputsShuttle.java:
##########
@@ -85,9 +101,15 @@ private static ImmutableList<RelDataTypeField> 
fields(RelNode[] inputs) {
   @Override public RexNode visitInputRef(RexInputRef local) {
     final int index = local.getIndex();
     int target = mapping.getTarget(index);
-    return new RexInputRef(
-        target,
-        local.getType());
+    if (!isStrictTypeMatch) {

Review Comment:
   this doesn't look to me like it's a "strict" comparison
   basically you are copying types from different fields: source, or destination
   Am I right?



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