YiwenWu commented on code in PR #3840:
URL: https://github.com/apache/calcite/pull/3840#discussion_r1663415292
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core/src/main/java/org/apache/calcite/rex/RexSimplify.java:
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@@ -2272,8 +2272,14 @@ && sameTypeOrNarrowsNullability(e.getType(),
intExpr.getType())) {
(RexLiteral) e.getOperands().get(1))
: rexBuilder.makeCast(e.getType(), operand, safe, safe);
executor.reduce(rexBuilder, ImmutableList.of(simplifiedExpr),
reducedValues);
- return requireNonNull(
- Iterables.getOnlyElement(reducedValues));
+ RexNode reducedRexNode =
requireNonNull(Iterables.getOnlyElement(reducedValues));
+ if (reducedRexNode instanceof RexCall) {
Review Comment:
+1
add CAST judgement `RexNode.isA(SqlKind.CAST)`
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